Find the Missing Number (Pre-Algebra)

Find the Missing Number (Pre-Algebra)

Solve missing addends

Find the missing addend

To find a missing number

__ + 6 = 10

Subtract!

10 -6 = 4

SO

4 + 6 = 10

Multiple Choice

Which subtraction sentence would help you solve:

__ + 16 = 36

• 20 -16

• 16 -36

• 36 - 16

• 36 - 20

Multiple Choice

Which subtraction sentence will help you solve: 25 + __ = 100?

• 75-25

• 100-75

• 100-25

• 25 -100

Multiple Choice

Which subtraction sentence would help you solve: 60 + __ = 120

• 120-60

• 60-60

• 60+60

• 60-120

Multiple Choice

Which subtraction sentence would help you solve: 160 + __ = 512

• 352 - 160

• 160 -512

• 512 - 160

• 512 - 352

To find the missing number

Subtract! So...

__ + 33 = 71

Subtract

71 - 33 = 38

38 + 33 = 71

Open Ended

Find the missing number:

19 + __ = 40

(Clue: 40 - 19)

Open Ended

Find the missing number:

40 + __ = 56

Open Ended

Find the missing number:

__ + 40 =77

Open Ended

Find the missing number:

20 + __ = 56

Open Ended

Find the missing number:

23 + __ = 44

Open Ended

Find the missing number:

34 + __=55

Open Ended

Find the missing number:

__ + 21 = 56

Open Ended

Find the missing number:

__ + 15 = 55