 # Find the Number: What Makes the Sum Correct? (2)

In this worksheet, students find the missing number in a sum by using addition and subtraction. Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Use Correct Methods to Problem Solve

Difficulty level:   ### QUESTION 1 of 10

In this worksheet you must find the missing number in a sum.

Example

Find the number that makes the sum correct.

332 + __ = 900

The opposite (inverse) of adding is subtracting.

So we work out 900 - 332 = 568

Find the number that makes the sum correct.

73 + __ = 300

Find the number that makes the sum correct.

319 + __ = 900

Find the number that makes the sum correct.

70 + __ = 200

Find the number that makes the sum correct.

361 + __ = 700

Find the number that makes the sum correct.

50 + __ = 400

Find the number that makes the sum correct.

118 + __ = 900

Find the number that makes the sum correct.

184 + __ = 200

Find the number that makes the sum correct.

93 + __ = 800

Find the number that makes the sum correct.

419 + __ = 800

Find the number that makes the sum correct.

13 + __ = 200

• Question 1

Find the number that makes the sum correct.

73 + __ = 300

227
• Question 2

Find the number that makes the sum correct.

319 + __ = 900

581
• Question 3

Find the number that makes the sum correct.

70 + __ = 200

130
• Question 4

Find the number that makes the sum correct.

361 + __ = 700

339
• Question 5

Find the number that makes the sum correct.

50 + __ = 400

350
• Question 6

Find the number that makes the sum correct.

118 + __ = 900

782
• Question 7

Find the number that makes the sum correct.

184 + __ = 200

16
• Question 8

Find the number that makes the sum correct.

93 + __ = 800

707
• Question 9

Find the number that makes the sum correct.

419 + __ = 800

381
• Question 10

Find the number that makes the sum correct.

13 + __ = 200

187
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