00:10 Good day, everyone.

00:15 My name is Mr. Akala.

00:18 I'll be your mathematics teacher for today.

00:21 And the topic before me is basic operations on all numbers.

00:27 Again, basic operation on all numbers.

00:31 The learning objectives are followed.

00:33 By the hand of this lesson, the learners should be able to revise

00:36 addition and subtraction of both simple and light all numbers.

00:41 Number two, the learners should be able to revise multiplication and division by all numbers.

00:48 Number three, the learners should be able to apply bit mass rule or

00:51 otherwise known as bot mass to solve problems with mixed operations.

00:56 Number four, the learners should be able to multiply and divide by 10, 100, 1000, etc.

01:05 Now, we go into the content of the topic.

01:09 So we're going to start with addition and subtraction.

01:13 When adding or subtracting numbers, make sure you know the values of the numbers.

01:20 Then write each number, alternate the order so that all the units, figures are in line.

01:28 All the tens, all the hundred, and so on are in line.

01:33 So for instance,

01:46 the first one says, add 1 9 5 2 92 and the 2 9 9.

02:05 So we're going to array them according to their place value.

02:08 Firstly, we have the unit comes first, the tens follow,

02:14 after the tens we have the hundred and we have 1000.

02:18 So we're going to put the numbers there.

02:22 So on that unit we have two, five, that is first number, nine, one.

02:30 That's one, one thousand, one hundred and fifty two followed by ninety two.

02:35 So you start with the unit column and followed by the test column, that's nine, ninety two.

02:43 Then we also have two hundred and ninety nine you start with the unit column, nine, nine, two.

02:51 So make sure you put your plus sign so you need to add the numbers.

02:57 So if you want to have, you start with the unit column.

03:00 Two plus two is four, four plus nine is four plus nine is the ten.

03:08 You write three, you carry one over to ten's column.

03:15 So you do the addition again, one plus five is six, six plus nine is fifteen, fifteen plus nine is twenty four.

03:24 You write four, then you carry two to hundred column.

03:31 So you also added two plus nine is eleven, eleven plus two is thirteen, you write three,

03:38 then you carry one over to thousand column.

03:43 So one plus one is two.

03:44 So the final answer is two thousand, three hundred and forty three.

03:50 So that's on addition.

03:52 So we go to subtraction now.

03:55 So now we've done the addition, we go to subtraction.

03:59 So we also have the second question, we also have the second question.

04:05 So and of course it says subtract four hundred and thirty two from one thousand nine hundred and thirty seven.

04:31 So we also need to, because this is subtraction, we also use the same method for, use the same method that we will use for addition.

04:39 So now we write in terms of their place value.

04:42 You first of all write the unit, the tens, hundred and of course thousand.

04:56 So obviously the bigger number comes first, because subtract four hundred and thirty two from one thousand, hundred and thirty seven.

05:07 So you write them one, nine, three, seven, then make sure you put your minor sign.

05:18 They have four, three, two, make sure that unit column is in line, look at the number seven and two are on unit line, three and three down, tens line.

05:32 So make sure that you arrange them correctly so that you don't make mistakes so that it does not affect your answer at the end of the day.

05:40 So now let's solve for the answer. So the answer, so seven minus two is five, the right five, three minus three is zero, nine minus four is five, and one minus zero is one.

05:57 So the final answer is one thousand five hundred and five.

06:03 So we see more examples that are clear with your difficulties. So now when they say when they use the word take away, it's also talking about subtraction.

06:13 So the thought, the thought example says take away nine, three, six.

06:43 From take away nine, three, six from seven hundred and ninety three is something else we did in number two.

07:11 So you write your unit, your tens, your hundred and your thousand.

07:41 So you write three is under units, nine is under tens, zero is under hundred then thousand, seven is under thousands, so we have six is under units, three is under tens and of course, nine is under hundreds.

08:06 So now let's subtract.

08:16 So now obviously if you look at this question, care as to be taken when you're subtracting now we have three minus six, three minus six is impossible.

08:32 So what you do is that you take one from nine, when you take one from nine, that one that you take becomes ten, when it gets to units, it becomes ten.

08:46 Then now the one you have taken, when you take one from nine, what you, what you be, what you have here is eight. So you now do ten minus six, you have seven.

08:58 Then eight minus three is five, you're right five.

09:03 When you look at it, zero minus nine is also not possible, you also need to take one from thousand columns. So when you take one here, what you have left here is six.

09:14 So that one you have taken becomes ten, under hundred columns. So you have ten minus nine becomes one.

09:44 So ten minus nine becomes one. So what we have left is six minus zero. We have six. So the final answer is six thousand, one hundred and fifty seven.

09:54 Then we also have what problem or big aspirations. So we're going to solve a question on what problem.

10:18 Now the question says, let me write the question out. That's the number four.

10:39 Number four, it says, all are as two thousand, five hundred and seventy-eight oranges.

11:03 Time will ask, time will ask one thousand seven hundred and eighty-two oranges.

11:24 Mohammed asked seven hundred and eighty-eight oranges.

11:46 How many oranges?

11:58 How many oranges do they have altogether?

12:02 So now let's solve the question. Obviously when you look at the question, it's talking about addition, all together, all together means you add up all the number of oranges.

12:28 So we're solving the question, the what problem. So we start with our arrangement of our place value.

12:45 We have unit, we have tens, we have hundred and we have thousands.

12:58 So the first number that is all are as two thousand, five hundred and seventy-eight oranges, right? Two thousand, five, seven, eight.

13:12 That's for all. Then now time will ask one thousand, seven hundred and eighty-two, one thousand, seven hundred and eighty-two.

13:21 Then Mohammed has seven hundred and eighty-eight, so you add up the numbers because it is all together.

13:34 How many oranges do they have all together? So it's plus two is ten, ten plus eight is eighteen, you write your eight, then you carry over one to ten's unit column.

13:49 Because what we would go to eighteen is you write eight, so the one will be carried over to ten's column.

13:56 So you also continue that one plus seven is eight, eight plus eight is sixteen and sixteen plus eight is twenty-four, you write four, then you carry two over to hundred column.

14:10 So two plus five is seven, seven plus seven is fourteen and fourteen plus seven is twenty-one, you write one, then you carry two over to thousand column.

14:21 So you have two plus two for four plus one, five.

14:27 So all together they have five thousand, one hundred and forty-eight oranges. So this is how to perform addition and subtraction on mid operations.

14:42 Now we go to multiplication, multiplication is usually regarded as repeated addition.

14:52 When multiplying two numbers, try to write the larger number first.

14:58 Try to write the larger number first, EG, EG nine, hundred and eighty-six times twenty-five,

15:07 should not be written as twenty-five times nine hundred and eighty-six. So take note of that.

15:14 So you also need to multiply your own number by ten and one zero to multiply your own number by ten, you had one zero.

15:26 If you are multiplying your own number by hundred, you had two zeros.

15:32 So for instance, so I also give you some examples on multiplication.

15:37 So find the products, that's the first question on multiplication. Find the products.

15:47 Let's work examples on multiplication.

15:59 So of course we have the, that's our multiplication on multiplication, multiplication.

16:17 Number one, find the products.

16:35 Find the product of four, nine, six, and three, nine, five.

17:03 Like I said earlier, you should not multiply thirty-nine, you should not write it as three, nine, five times, four, nine, six.

17:14 So the larger number comes first. So this, I am going to solve it.

17:23 So you have four, nine, six, times, three, nine, five.

17:38 You have to be careful when you are multiplying all numbers.

17:48 So you start by, look at, you have five here now, this is five.

17:54 So five times six is steady, five times six is steady, you write zero, then you can put your three somewhere here, you can put your three, you know, five times six is steady.

18:09 So you cannot write thirty, you write zero, then you put your three, then now five times nine is forty-five, five times nine is forty-five.

18:22 Don't forget I will put our three by one side, so you just do forty-five plus three, and forty-five plus three is forty-eight.

18:33 So you write eight, you don't write forty-eight, you write eight, then you have four automobiles on one side, so that you don't forget, you don't make mistakes.

18:46 So five times four is twenty, five times four is twenty, so you also need to have four to twenty.

18:54 So you do, you do twenty plus four, and that's what, that's twenty-four, so you write twenty-four.

19:15 You write twenty-four, then you can, you can actually erase this.

19:29 Also, we do the same thing for nine, nine times six, nine times six is fifty-four.

19:35 You cannot write fifty-four, and when you are writing four, look at it, nine times six is fifty-four, this is fifty-four.

19:48 Nine times six is fifty-four, you write four, on the, look at this is like test column, you don't write it in a living space, because you write it here, your answer will be wrong.

20:01 You write your four, on the eight, you write your four on the eight, so that you don't, because if you write it on the zero, your answer will be wrong.

20:13 So you have to leave it, you have to leave it space, and write four, so we have five remaining outside.

20:20 So you now do nine times nine is eighty-one, so you now add five to, you add five to eighty-one, and that's what that's eighty-six.

20:33 So you write six on the four, then what you have left is eight.

20:52 So we've written six on the four, so now we have it left outside, so now we also do three, nine times four, nine times four is thirty-six.

21:05 So you add eight to thirty-six, so you add, so I said nine times four is thirty-six, so you write thirty-six.

21:33 Don't forget that we have eight outside, thirty-six plus eight, thirty-six plus eight is forty, that's forty-four.

21:47 So you write, you write forty-four.

21:58 So the last number is three, so three times six is eighteen, you write eight, one is outside, three times nine is twenty-seven, twenty-seven plus one, twenty-seven plus one is twenty-eight.

22:24 So you also write eight on the four, then you have two remaining outside, then three times four is twelve.

22:33 So you also add two to twelve, twelve plus two, twelve plus two is fourteen, so you write fourteen.

22:44 So addition of all these numbers give us the final answer, so we need to, we need to have the numbers, zero plus zero plus zero is zero, eight plus four plus zero is twelve, you write two, then you carry one over, one plus four is five, five plus six is eleven, eleven plus eight is nineteen, you write nine, you carry one over, one plus two is three, three plus four is seven, seven plus eight is fifteen.

23:14 You write five, you carry one over, so one plus four is five, five plus four is nine, so one plus zero is one, so this is the final answer.

23:27 So our answer is one hundred and ninety-five thousand nine twenty. So that is on multiplication, so we also have, we're going to treat more samples for the sake of clarity.

23:43 So now, so walk out, another example that I'm going to talk about is very simple to, to find, you just, you know, when you have numbers, you want to multiply numbers.

24:10 And these numbers, you discover that there are zeros, you discover that these numbers, there are zeros at the back of the numbers, it's very simple, just look for the non-zero numbers, multiply it, then add the number of zero at the back, it's as simple as that.

24:28 So now look at this example now, that's a sample two, that's a sample two on multiplication of all numbers.

24:43 Now, walk out, the first one is, walk out, walk out eighty times three hundred, that's the first one.

25:03 And you also have a B, multiply, multiply, walk fifty by eight thousand, walk fifty by eight thousand.

25:30 You'll see, and you'll see, find the products, find the products,

25:56 find the product of one thousand for hundred and nine thousand.

26:12 So looking at this, you discover that each question has zeros at the back of a number, so it's very simple.

26:23 If you want to, if you want to solve it, now looking at the first question, they are eighty times three hundred, eighty times zero hundred.

26:45 So I said, if you look at eighty, we have eighty has one zero and three hundred has two zeros, this is what all you just need to do is you write eight times three.

27:00 But you write eight times three first, each times three, eight times three is twenty four, eight times three is twenty four, you write twenty four.

27:22 Now if you look at eighty has one zero and three hundred has two zeros, so all together we have three zeros, so because we have three zeros, you just add three zero at the back of twenty four, zero, zero, zero.

27:45 And that gives us the answer, so eighty times, eighty times three hundred, eighty times three hundred equals to twenty four thousand.

28:09 As simple as that, you don't need to rack your brain on this one, so look out for the numbers, then also simply add the number of zeros, you can't the number of zeros, add the number of zeros at the back of the number, that gives the answer.

28:23 So now we go to the next one, it says multiply 150 by 8,000, multiply 150 by 8,000, so it doesn't matter if you multiply the bigger number or the smaller number by each other, it doesn't make any difference.

28:46 As long as you can't the number of zero and you had it at the back, it's as simple as that, so now okay, now question B says 150 times 8,000, 8,000.

29:16 In this case, you can just multiply 15 times 8, 15 times 8, so you do 8 times 5 is 40, you write zero here, and you have, because it's 40, you put the four outside.

29:37 Next times 1 is 8, then 8 plus 4, 8 plus 4 is 12, so that's 120, so 15 times 8 is 120, and don't forget that 150 asks 100 and 8,000 asks 300, so we're going to add the number of zeros at the back of 120, because you know we have four zeros.

30:05 So the final answer, so the final answer is 150 times 8,000 equals to, don't forget that 15 times 8 is 120, you write your 120 first.

30:33 Then I say we have a manager, we have 1, 2, 3, 4 zeros, add the number of zeros, 1, 2, 3, 4, so that's the answer, so we have, we have 1,000, 200,000, that's the answer, it's as simple as that.

30:54 So the last question there is on multiplication, find the product of 1,400 and 9,000, it's still the same way as we saw in B, so now we have for 1,000 for 100 times 9,000.

31:24 So now you just do, I showed you, look at 14, you multiply 14 by 9, then you now count the number of 0 and 23, back of your answer, so 14 times 9, 14 times 9, 9 times 4 is 36, you write 6, put your 3 outside, 9 times 1 is 9 plus 3, you have 12.

31:53 So 14 times 9 is 126, so now to now, multiply 1,400 times 9,000, you just write, because we have,

32:16 so we have, therefore 14,000, 1,400, rather 1,400 times 9,000 equals to, so we first of all got 126, you write 126.

32:40 Then the number of 0, we have 1,2,3,4,5, so we have 5 0, you write, 5 0, 1,2,3,4,5, so that's our answer, so this is 12,600,000, so that is how to perform multiplication on all numbers.

33:07 So we now go to division, division, so of course when they say division, division may be regarded as the, as the inverse, that is opposite of multiplication.

33:22 So e g, 20 divided by 5, that is, of course you know that, you can also say that, okay, the next one is, the number to be divided is called the division.

33:38 The number to be divided is called the division, and the number performing the division is called the divisor.

33:45 So in this case, 20 is the dividend, and 5 is the divisor, so to divide it all number, that ends in zeros by 10.

33:58 So remove a cello from the number, to divide it all number, that ends in, at least two zeros by 100, remove two zeros from the number.

34:11 So now let's solve the question, you're not able to see what division look like.

34:19 So now we've done this out to divide numbers.

34:33 So now walk a sample, all divisor.

34:57 Now the first one using short division method, using short division method, calculate the following.

35:07 Now the first one there, you have 1 a, 2, 1, 9, divided by 3, and b, you have h, o, 5, divided by 5.

35:31 And c, we have 1, 4, 5, divided by the chain.

35:43 In the elementary school, in the elementary school you were taught, you were taught that,

35:56 if you look at this two, 119 divided by 3, you want to divide it, you can use the knowledge of your elementary school like,

36:04 if you have, you write it like this, you have 2, 1, 9, that is the big number will be, will be inside, so you have the three outside.

36:23 So now three in 21 is, because we are using short division method, calculate the following.

36:33 So three in 21, three in 21, that's how many times can three go in 21 is seven times, so you write seven here.

36:44 So because three times seven is 21, then how many times can three go in nine is actually three times, so you write three because three times three is nine.

36:58 If you don't want to use this method, another method that you can use, you can also say that, because we are using short method,

37:04 you can also do it this way, 2, 1, 9, over 3, 2, 1, over 3, so you do 3 in 21, 3 in 21 is seven, and 3 in nine is three, so your answer is still 73.

37:25 Either of this method will work, and you still get your answer. So now, let's continue, because we see more questions.

37:33 H 0 5 divided by 5, so now I'll keep to one method now, because it's short method, it's short, so I'm going to keep to this.

37:55 H 105 divided by 5, so now you do 5 in 8 is actually what 5 can go in it once, that's remaining, remaining 3, you put your 3 here.

38:18 5 in 30 is 6, and of course 5 in 5 is 1, so the final answer is 161, you can also use the other method, you still get the same answer.

38:35 Right now, the next question is, that one is going to have a remainder.

39:05 So, since you have a question, you don't need a remainder.

39:18 Okay, now question, so now we have, that's the next question, question C, it does a 1, 4, 5.

39:32 1, 4, 5 divided by charging. Now, this one is going to have a remainder.

39:53 How many times can 13 go in 14 is actually 1 time, remainder 1, you put your 1 here, then 13 in 15 is actually, so 13 can go in 15 one time.

40:14 So, and the remainder is 2, because 13 in 15 is 1, remainder 2, so you write 11 or number, the remainder is 2, you write 2 over 13.

40:29 This one is actually a mixed fraction, so we have so many ways of performing division, so using short method.

40:39 So, I've given you short method, now we go to the next question, which is using long division method, using long division method.

40:49 So, now, so that's a question, that's question 2, using long division method, that's the first one now, using long division method.

41:06 So, you have 6, 7, 5 divided by 5, now if you want to use long division method, so you, this is how you write it, you first of all, write a square root sign,

41:36 you'll put 6, 275 in the square root sign, then you have 5 written outside, I want to use the long division method now.

41:47 So, now, 5 in 6 is 1, you write the answer here, 1, 5 in 6 is 1, so 1 times 5, 1 times 5 is 5, you write 5 down here.

42:02 Then now, you need to subtract 5 from 6. 6 minus 5 is 1, so 6 minus 5 is 1, so you write your 1 here,

42:32 so you're going to bring down, you're going to bring down this 7, you're going to bring down 7, you bring it down here.

42:40 5 in 17, how many times can 5 go in 17 is actually 3 times, you write your answer 3, 3 times 5 is 15, you write 15.

42:52 On the 17, then you also need to subtract again, then now 7 minus 5 is 2, 1 minus 5 is 0, there's no need to write any number.

43:07 So, you also need to bring down your 5, you bring it down here, so you write 5 down here, then 5 in 25 is 5, so 5 times 5 is 25.

43:21 So, and now when you subtract 25 minus 25, you have 0, so your answer using long division method is 1, 3, 5, so that's how to perform long division method.

43:38 So, now, now I will also give more examples on, so the next question is,

44:08 that's 2B, 2B, so that one is 448 divided by 8, 448 divided by 8, so now using long division method,

44:31 you write your 448 in the square root sign, 448, now you write it outside here, 8 in 4 is impossible,

44:56 so you don't need to write any number, so you just write 8 in 44, 8 in 44 is 5, you write 5 here, 5 times 8 is 40,

45:09 you write 40, then you do your subtract, 4 minus 4 is 0, then 4 minus 0 is 4, you write 4 here, then you bring down 8,

45:27 so you write it, you have 48, 8 in 48 is 6, 6 times 8 is 48, so you subtract again, so you have 0, 0, so now your answer is equals to 56,

45:51 that's the answer to 6, so now we're also going to treat what problems, we're going to, because there is no out,

46:02 you want to have what problems on basic operations, especially when you have to run errands for your parents or for adults,

46:15 for adults, so we're going to also use long division method to solve some question on what problems,

46:25 so now, so we have 59, that's because it's on 3 now,

46:50 you want to write it out, just solve it, it's coming already, then solve it,

46:58 so now, the next question is 5,000, not only that 82 computers are to be shared,

47:23 5000, not 100 and 82 computers are to be shared among 40 schools, among 40 schools, how many will each school get,

47:37 and how many will be left over, so we're going to use the knowledge of long division to solve the question,

47:45 so we have 4, that's it, 5, 9, 8, 2, divided by 40, divided by 40,

48:01 so now, let's use the knowledge of it, 5, 9, 8, 2, 5, 9, 8, 2, so now, we have a 40 year,

48:18 so 40 in, how many 40 do we get in 59, we have just 140, so 1 times 40 is 40,

48:30 so we subtract, so 5, we have a 5 minus 4 is 1, 9 minus 0 is 9,

48:46 so in this case, when you subtract 40 from 59, you get 19, you bring down 8, you bring down 8,

48:59 40 in 100 and 98, 40 in 100 and 98 should be, so it's something you can do some mental calculation,

49:12 or you can just, like now, if you do 40 times 5, 40 times 5 is, that's 200, so obviously,

49:25 we cannot use 5, because 200 is greater than 1, so if you try 4 now, if you try 4,

49:32 if you do 4, 40 times 4, that's 160, so obviously, I think 4 in 198 is 4,

49:42 so 4 times 40 is 160, 4 times 40, so you also need to subtract,

49:53 so we have 9 minus 8, 8 minus 0 is 8, 9 minus 6 is 3, so you bring down these 2,

50:04 you bring down these 2, so now 40 in 300 and 32, so I think if we try again, if we do 40 times

50:23 8, if you do 40 times, so if you do 40 times 8, that's we have a, we have 3, that's a 320,

50:38 we have 320, so and if you do 9, if you do 9, okay,

50:54 okay,

51:03 okay, so now if we if we try,

51:10 if you do 40 times 9,

51:18 that's 9 times 4 is 36, we have 360, so I think we can use 9, because if you do 40 times 10,

51:27 40 times 10 is 400, I'm 400 is greater than 382, so we're going to use 360, so 40 in

51:35 382 is actually 9, so 9 times 40 is 360, so you subtract, so we have 3 minus

51:48 3, 0, 8 minus 6 is 2 and 2 minus 0 is 2, so 22 is the remainder, so obviously the question says

52:01 how many will each 2 get, so it shows that from the calculation, each code we get, each code we get

52:10 149 computers, each code we get 149 computers and how many will be left over, the left over

52:23 remainder is, remainder is 22, so we have 32 computers that are left over, so this out to perform

52:36 division on basic operations, so now we go to mixed operations, so now we also want to talk about

52:44 mixed operations, now once solving problems involving a mixed operation, you need to apply

52:52 bitmas, and it's also it's otherwise known as bodmas, like you were taught in elementary school,

53:03 so obviously you know that bodmas, I want to give you the many of bodmas, it's an acronym,

53:10 so be represent bracket, or represent of the represent division, M represent multiplication,

53:18 A represent addition, and S represent subtraction, so by one they say bitmas, that's the new name,

53:26 they are calling it bitmas, the idea is actually representing indices or power, indices of power,

53:35 so that we are going to use bodmas now, so that when you are using bodmas, you have to be careful,

53:43 don't miss it, don't use multiplication instead of division, you just have to follow in that order,

53:51 so now if you look at some questions here, I have some questions here,

54:05 okay now simplify the following mixed operation, now look at this mixed operation now,

54:22 mixed operations, now simplify the following,

54:31 now when you have it, that's on that mixed operation, when you have it plus 9,

54:51 times 15 divided by 15, now don't forget,

55:02 don't forget that you are going to treat the number in the bracket first,

55:12 you treat the number in the bracket first, so you have 8 plus 9 is 17,

55:20 times 15 divided by 5, now when you look at the expression, if you look and you consider

55:33 bodmas, you know that division comes before multiplication, so we are going to treat division

55:40 first, so when I have 17 times, obviously 15 divided by 5 is 17 as 15 over 3,

55:51 3 goes here 1, 3 and 15 is 5, so when I have 17 times 5, so the final answer is 5 times 7 is 35,

56:05 you write 5, 5 times 7 is 35, you write 5, then remember 1, 5 times 1 plus 1 is 65,

56:21 so the answer is 65, so you have to consider applied bodmas, whenever you are solving

56:29 question on mixed operation, it is very important, so then the next question,

56:33 the next question on mixed operation, now I have a question, that says,

56:43 6 plus 9,

56:56 okay, I have 4 times,

57:10 4 times 3 plus 4 minus

57:17 plus 5 times

57:24 8 minus 3 minus 2, so don't forget that you treat the bracket first, brackets,

57:36 the numbers, the expression in the bracket should be treated first, so now you have this 4 times

57:43 3 plus 4 is 7, 7 minus 5 is 2, then plus 5, so 3, 8 minus 3 is 5, 5 minus 2 is 3,

58:02 now I am going to do because multiplication calls before addition,

58:07 so if you multiply this 4 times 2 is 8 plus if you multiply this 5 times 3 is 15,

58:15 so the final answer is 23, then we also have the next question is what problem,

58:26 so the what problem is it is peculiar to all operations, so we have a

58:43 so the question says Joe, I thought maybe I should be fast,

59:13 so the next question,

59:15 okay, okay, so the next question is

59:39 6 plus 9 minus 5 times 10 divided by 5,

01:00:03 divided by 5 plus 1 over 2 of, don't forget the question continues of 90 minus

01:00:21 minus 25 plus 5, now looking at this question now, you also need to apply

01:00:37 body mass and you have to be very careful when you are doing that, so now

01:00:40 if you look at it now, I am going to treat the expression in the bracket first,

01:00:48 the expression in the bracket is 90 minus 25 plus 5, I am going to simplify the expression

01:01:02 in the bracket, so 90 minus 25 is 65 plus 5 and 65 plus 5 is 70, 70, so now I have done that,

01:01:18 then now also 6 plus 9 is 15, so I have minus 5, I have minus 5 times 10 divided by

01:01:40 divided by 5 plus 1 over 2, don't forget that this expression in the bracket has been

01:01:57 simplified to 70 times of means times, don't forget, of means times times 17 times 17, so now let's

01:02:08 simplify it further, 2 goes here 1, 2 in 70 is 35, don't forget that I said division comes before

01:02:24 multiplication, so in this case now I am going to write 15 minus 5,

01:02:39 15 minus 5 times this division must be treated first, so we have 10 over 5, 10 over 5 plus

01:03:00 because we have 1 times 35 is 35, so now 15 minus 5, now looking at this place 5 goes here 1,

01:03:17 5 in 10 is 2, so now we have 5 times 2 plus 35, so now the final answer is 15,

01:03:30 oh, because multiplication comes first, come before additional expression 5 times 2 is 10, you do

01:03:42 5 times 2 is 10 plus 35, now the final answer will be 15 minus 10 is 5 plus 35,

01:04:00 5 plus 35 is 40, so our answer is 40, so make sure you follow both masks because if you don't do that

01:04:11 your answer might be wrong, so we move to the next question that has to do with word problems, so

01:04:30 now okay, so now the next question on word problems, Joe bots 25 books, Joe bots 25 books at

01:04:53 350, so what does that mean, it means one book, it means one book, one book is 350, that's what it means,

01:05:13 one book is 350, so and 25 books, 25 books will be 350 times 25, so now let's solve it now 350 times 25,

01:05:43 5 times 0 is 0, 5 times 5 is 25, 5 times 3 is 15, 15 plus 2, you get 17, so you have 17 here,

01:05:59 2 times 0 is 0, 2 times 0 is 0, 2 times 5 is 10, you write 0, you carry 1, then 2 times 3 is 6 plus 1 is 7,

01:06:18 so you have 7 here, so adding it together, we have 0 plus 0, 5 plus 0 is 5, 7 plus 0 is 7, 1 plus 7 is 8,

01:06:32 so the cost of 25 book is 8,750, that's the cost of 25 books, so then the next question is,

01:06:43 the next question is, it does in pain at 5 nera each, it does in pain at 5 nera each,

01:06:53 so it does in is 12, does it is 12, so when I say it does in pain, it means 12 pains, so each one,

01:07:16 so it does in pain, each one that is one pain, don't forget that, it does in is 12,

01:07:30 so now if pain, one pain cost 5 nera, one pain cost 5 nera, so 12 pains will cost,

01:07:55 will cost 5 times 12, and that is 60 nera, so the cost of 12 pain is 16 nera, so the question says,

01:08:12 how much did it spend all together, so all together means it spends 8,750 plus 69,

01:08:35 0 plus 0 plus 0 is 0, 5 plus 6 is 11, carry one, 1 plus 7 is 8, 8 plus 0 is 8, so all together,

01:08:47 Joe, Spanx, 8000, 810 nera, so this, okay now this are the questions on mixed operations,

01:09:04 and I believe that you need to do some, you need to solve some questions on your own,

01:09:12 so I have some questions on that evaluation, we have come to the end of this lesson,

01:09:20 and I have some questions for you to practice, the question has followed one, decrease,

01:09:27 50,270 by 9,267, the second question, in mann, 82,700 and it's 12 years ago,

01:09:38 92,485 a year ago, and 125,749 this year, how much did it end all together for the three years?

01:09:55 The third question, 7,9,000 and 1 minus 73,776,

01:10:05 number four, there are 18, there are 816 boys, and 658 girls in the school,

01:10:15 how many students are there all together in the school?

01:10:21 B, how many more boys in the school than girls? Question five,

01:10:26 Matthew collected 135 oranges modern liars, how many oranges were collected by a boot of them if

01:10:33 liars collected 100 and 1400 and 99 oranges? Then the question six, a woman took 1500

01:10:44 silver to markets, she bought 12 tubers of yam at 45 nr each and 25 cups of rice at 35 nr each,

01:10:54 how much money did she have left? Then the next question, that is on mixed operation,

01:11:01 one hundred and five minus 15 times four plus 32 plus one over four of in brackets,

01:11:11 bracket up on 15 times four minus 13 bracket close. Lastly, there's the last question,

01:11:18 seven hundred and 99 apples are to be shared equally, among 14 brothers, how many will each person

01:11:26 get and how many will remain? Thank you for watching, we have come to the end of today's lesson,

01:11:31 my name is Mr. Calau.