 # Add and Subtract to Find the Missing Number (2)

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

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 1000

Difficulty level:   ### QUESTION 1 of 10

In this worksheet you have to find the missing number in the sum. Example

Find the missing number in the sum.

134 + ___ + 22 = 160

Step 1:   Add together 134 + 22 = 156.

Step 2:   Work out what you need to reach 160 by calculating 160 - 156 = 4

So,

134 +  4  + 22 = 160

Find the missing number in the sum.

91 + __ + 185 = 281

Find the missing number in the sum.

412 + __ + 34 = 451

Find the missing number in the sum.

23 + __ + 417 = 447

Find the missing number in the sum.

311 + __ + 100 = 415

Find the missing number in the sum.

402 + __ + 8 = 460

Find the missing number in the sum.

24 + __ + 414 = 447

Find the missing number in the sum.

304 + __ + 138 = 447

Find the missing number in the sum.

138 + __ + 176 = 414

Find the missing number in the sum.

42 + __ + 316 = 368

Find the missing number in the sum.

371 + __ + 28 = 399

• Question 1

Find the missing number in the sum.

91 + __ + 185 = 281

5
EDDIE SAYS
Work out 91 + 185 = 276
Then 281 - 276 = 5
• Question 2

Find the missing number in the sum.

412 + __ + 34 = 451

5
EDDIE SAYS
Work out 412 + 34 = 446
Then 451 - 446 = 5
• Question 3

Find the missing number in the sum.

23 + __ + 417 = 447

7
EDDIE SAYS
Work out 23 + 417 = 440
Then 447 - 440 = 7
• Question 4

Find the missing number in the sum.

311 + __ + 100 = 415

4
EDDIE SAYS
Work out 311 + 100 = 411
Then 415 - 411 = 4
• Question 5

Find the missing number in the sum.

402 + __ + 8 = 460

50
EDDIE SAYS
Work out 402 + 8 = 410
Then 460 - 410 = 50
• Question 6

Find the missing number in the sum.

24 + __ + 414 = 447

9
EDDIE SAYS
Work out 24 + 414 = 438
Then 447 - 438 = 9
• Question 7

Find the missing number in the sum.

304 + __ + 138 = 447

5
EDDIE SAYS
Work out 304 + 138 = 442
Then 447 - 442 = 5
• Question 8

Find the missing number in the sum.

138 + __ + 176 = 414

100
EDDIE SAYS
Work out 138 + 176 = 314
Then 414 - 314 = 100
• Question 9

Find the missing number in the sum.

42 + __ + 316 = 368

10
EDDIE SAYS
Work out 42 + 316 = 358
Then 368 - 358 = 10
• Question 10

Find the missing number in the sum.

371 + __ + 28 = 399

0
EDDIE SAYS
Work out 371 + 28 = 399
Then 399 - 399 = 0
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