Addition and Subtraction with Regrouping

Addition and Subtraction with Regrouping

By Abeer AbouTraby

when you want to add or subtract 2-digit number always start with the ones digits

REmember

when the sum of the ones digit is greater than 9 for example 12 we should put the tens digit which is 1 in the balloon in the tens place.

​ look at the video above

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​​Addition

​when subtracting to digit numbers,(example 92-27). the ones digit of the first number (2) less than that of the second number (7). So the ones digit (2) will ask her friend the tens digit (9) to give her a ten. the 9 will be 8 and the 2 will be 12

​ look at the video above ​

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​​Subtraction

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Open Ended

Exercise 1:

a- Kareen invited 4 tens and 8 ones of boys and 2 tens and 6 ones of girls to her birthday party

How many were invited to the party?

Open Ended

b- 16 boys and 12 girls didn't come to the party.

How many friends didn't come to the party?

Open Ended

c- How many friends came to the party?

Draw

Draw the set up and solve: 62-48

Draw

Draw the set up and solve: 36-15

Draw

Draw the set up and solve: 46+28

Draw

Draw the set up and solve: 33+44

Multiple Choice

Solve in a draft paper and find the missing number

4 2

+

--- ---

______________

5 5

• 33

• 23

• 13

• 97

Multiple Choice

3 5

+

2 ---

______________

6 2

• 3

• 7

• 5

• 1