 # Addition and Subtraction: Find the Missing Numbers (2)

In this worksheet, students understand the relationship between addition and subtraction to help them find the missing number. Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Understand Relationship Between Addition and Subtraction

Difficulty level:   ### QUESTION 1 of 10

In this worksheet, you must find the missing number in an addition by subtracting the given number from the total.

Example

What must I add to 24 to make 29?

 24 + = 29 29 − 24 = 5

What number must I add to 15 to make 26?

 + 15 = 26 What must I add to 1 to make 29?

 + 1 = 29 What must I add to 26 to make 29?

 26 + = 29 What must I add to 7 to make 19?

 + 7 = 19 What must I add to 24 to make 30?

 24 + = 30 What must I add to 9 to make 26?

 + 9 = 26 What must I add to 15 to make 30?

 15 + = 30 What must I add to 15 to make 26?

 + 15 = 26 What must I add to 24 to make 31?

 24 + = 31 What must I add to 15 to make 26?

 + 15 = 26 • Question 1

What number must I add to 15 to make 26?

 + 15 = 26 11
EDDIE SAYS

26 - 15 = 11

• Question 2

What must I add to 1 to make 29?

 + 1 = 29 28
EDDIE SAYS

29 - 1 = 28

• Question 3

What must I add to 26 to make 29?

 26 + = 29 3
EDDIE SAYS

29 - 26 = 3

• Question 4

What must I add to 7 to make 19?

 + 7 = 19 12
EDDIE SAYS

19 - 7 = 12

• Question 5

What must I add to 24 to make 30?

 24 + = 30 6
EDDIE SAYS

30 - 24 = 6

• Question 6

What must I add to 9 to make 26?

 + 9 = 26 17
EDDIE SAYS

26 - 9 = 17

• Question 7

What must I add to 15 to make 30?

 15 + = 30 15
EDDIE SAYS

30 - 15 = 15

• Question 8

What must I add to 15 to make 26?

 + 15 = 26 11
EDDIE SAYS

26 - 15 = 11

• Question 9

What must I add to 24 to make 31?

 24 + = 31 7
EDDIE SAYS

31 − 24 = 7

(Extend the line slightly)
• Question 10

What must I add to 15 to make 26?

 + 15 = 26 11
EDDIE SAYS

26 - 15 = 11

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