MultiplicationDivisionSubtractionAddition Mathematics Year 2 Click on the topic that you want...

Multiplication DivisionSubtractionAddition

MathematicsYear 2

Click on the topic that you want Objectives


1. To review and reinforce the mathematics practice done to date (addition, subtraction, multiplication and division).

2. To count the number, to understand the composition, the order and size of the number, how to read and write, and the meaning of addition, subtraction, multiplication and division.

Objectives


• How to solve the problem?

Add without regrouping h t o

364 First, add the ones.

+223 Then, add the tens.

_587 Finally, add the hundreds.

+

exercise


Let’s try

Add.1. 143 + 435 = ( ) 5. 311 + 264 = ( )

2. 426 + 13 = ( ) 6. 567 + 131 = ( )

3. 80 + 109 = ( ) 7. 752 + 34 = ( )

4. 230 + 24 = ( ) 8. 281 + 316 = ( )

Let’s click me check your answer!


Let’s try

Add.1. 143 + 435 =(578) 5. 311 + 264 =(575)

2. 426 + 13 =(439) 6. 567 + 131 =(698)

3. 80 + 109 =(189) 7. 752 + 34 =(786)

4. 230 + 24 =(254) 8. 281 + 316 =(597)


Subtract without regrouping

Take out 6 from 9

h t o First, subtract the ones.

769 Then, subtract the tens.

-506 Finally, subtract the hundreds

263exercise


Subtract1. 547 - 316 = ( ) 5. 742 - 521 = ( )

2. 767 - 111 = ( ) 6. 754 - 311 = ( )

3. 311 - 201 = ( ) 7. 506 - 105 = ( )

4. 488 - 232 = ( ) 8. 989 - 222 = ( )

Let’s try

Let’s click me check your answer!


Subtract1. 547 - 316 =(231) 5. 742 - 521 =(221)

2. 767 - 111 =(656) 6. 754 - 311 =(443)

3. 311 - 201 =(110) 7. 506 - 105 =(401)

4. 488 - 232 =(256) 8. 989 - 222 = (767)

Let’s try


Multiplication

Recognize multiplication as repeated addition + +4+4+4 = 12

There are 3 groups of 4 flowers 3 x 4 = 12

Three times four equals twelve

Four plus four plus four equals twelve

Exercise 1


1.

Let’s tryComplete the number sentences

7 + 7 = ( ) 2 x 7 = ( )

2.

3 + 3 + 3 = ( ) 3 x 3 = ( )

Let’s click me to check your answer!


1.

Let’s tryComplete the number sentences

7 + 7 = (14) 2 x 7 = (14)

2.

3 + 3 + 3 = (9) 3 x 3 = (9)

Excellent!

Next


Multiplication TableX 1 2 3 4 5 6 7 8 9 10

1 1 2 3 4 5 6 7 8 9 10

2 2 4 6 8 10 12 14 16 18 20

3 3 6 9 12 15 18 21 24 27 30

4 4 8 12 16 20 24 28 32 36 40

5 5 10 15 20 25 30 35 40 45 50

6 6 12 18 24 30 26 32 48 54 60

7 7 14 21 28 35 42 49 56 63 70

8 8 16 24 32 40 48 56 64 72 80

9 9 18 27 36 45 54 63 72 81 90

10 10 20 30 40 50 60 70 80 90 100

Exercise 2


Let’s try1. 8 x 4 = ( ) 5. 9 x 3 = ( )

2. 5 x 5 = ( ) 6. 7 x 2 = ( )

3. 9 x 1 = ( ) 7. 8 x 5 = ( )

4. 6 x 4 = ( ) 8. 7 x 1 = ( )

Multiply



Let’s try1. 8 x 4 = (32) 5. 9 x 3 = (27)

2. 5 x 5 = (25) 6. 7 x 2 = (14)

3. 9 x 1 = (9 ) 7. 8 x 5 = (40)

4. 6 x 4 = (24) 8. 7x 1 = (7 )

Multiply

Exercise 3

Know by heart multiplication table

x 1 2 3 4 5

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

2

4

6

8

10

14

16

3

6

9

15

18

21

24

27

4

8

12

16

20

24

28

32

36

5

10

20

25

30

35

40

45

Which pair has the same

product?


Know by heart multiplication table

x 1 2 3 4 5

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

2

4

6

8

10

14

16

3

6

9

15

18

21

24

27

4

8

12

16

20

24

28

32

36

5

10

20

25

30

35

40

4518

15

12

12

5

Well done!

5

18

15

Next


5 x 1 = 5

1 x 5 = 5

5 x 1

1 x 55

6 x 2 = 12

4 x 3 = 12

6 x 2

4 x 312

Next


5 x 3 = 15

3 x 5 = 15

5 x 3

3 x 515

9 x 2 = 18

6 x 3 = 18

9 x 2

6 x 318

Exercise 4


Let’s try1. 8 x ( ) = 32 5. 9 = ( ) x 3

2. 5 x ( ) = 45 6. 12 = 6 x ( )

3. ( ) x 1 = 8 7. 21 = ( ) x 3

4. ( ) x 4 = 28 8. 36 = ( ) x 4

Multiply



Let’s try1. 8 x (4) = 32 5. 9 = (3) x 3

2. 5 x (9) = 45 6. 12 = 6 x (2)

3. (8) x 1 = 8 7. 21 = (7) x 3

4. (7) x 4 = 28 8. 36 = (9) x 4

Multiply


Recognize division as sharing equallyDivision Miss Lee distributes 8 cake among 2

pupils. Let’s see how Miss Lee does it.

Each pupils will get the same number of balls. Sharing involves distributing objects, one by one until a the objects are finished.

Next


Recognize division as sharing equallyDivision

8 ÷ 2 = 4

8 divided by 2 equals 4.

So, each pupils gets cakes.

4

Next


Recognize division as groupingDivision

Let’s make group of 5 cups of coffee. How many

groups do you get ?

Next


Recognize division as groupingDivision

20 ÷ 5 = 4

20 divided by 5 equals 4

So, I get groups.4

4 5√20

20

Exercise 1


1.

Let’s tryDivided. Then, write the number sentences

2.

÷ =

÷ =



1.

Let’s tryDivided. Then, write the number sentences

2.

28 7 4÷ =

12 ÷ 4 = 3

Very good!

Exercise 2


Let’s try1. 24÷ 4 = ( ) 5. 27÷ 3 = ( )

2. 60÷ 5 = ( ) 6. 20÷ 2 = ( )

3. 5 ÷ 1 = ( ) 7. 33÷ 3 = ( )

4. 32÷ 4 = ( ) 8. 7 ÷ 1 = ( )

Division



Let’s try1. 24÷ 4 = (6) 5. 27÷ 3 = (9)

2. 60÷ 5 = (6) 6. 20÷ 2 = (10)

3. 5 ÷ 1 = (5) 7. 33÷ 3 = (11)

4. 32÷ 4 = (8) 8. 7 ÷ 1 = (7)

Division

Exercise 3


Let’s try1. 18 ÷ ( ) = 2 5. 9 ÷ ( ) = 3

2. 25 ÷ ( ) = 5 6. 6 = ( ) ÷ 2

3. ( ) ÷ 1 = 8 7. 21 ÷ ( ) = 7

4. ( ) ÷ 4 = 9 8. 4 = ( ) ÷ 4

Multiply



Let’s try1. 18 ÷ (9) = 2 5. 9 ÷ (3) = 3

2. 25 ÷ (5) = 5 6. 6 = (12) ÷ 2

3. (8) ÷ 1 = 8 7. 21 ÷ (3) = 7

4. (36) ÷ 4 = 9 8. 4 = (16) ÷ 4

Multiply

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MultiplicationDivisionSubtractionAddition Mathematics Year 2 Click on the topic that you want...

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