Addition and Subtraction with a Missing Number

Which number sentences can represent this strip diagram Select ALL the ones that could be right!!!!

• 42 - 16 = ?

• 16 + ? = 42

• 42 + 16 = ?

• ? + 16 = 42

Sarah had 25 pencils. John gave her some more pencils. Now Sarah has 43 pencils. How many pencils was she given?

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Which number sentences represent this question? Select ALL that correctly represent the problem.

Billy has 29 fewer pencils than Juan. If Billy has 64 pencils, how many pencils does Juan have?

**Draw a strip diagram to help you!!!**

• 64 - ? = 29

• 29 + 64 = ?

• 64 + 29 = ?

• 93

Abigail has some money in her bank account. She adds $49 in the month of June. Now, she has $84. How much did she start with?

• 45

• 53

• 35

• 133

1+?=6

• 1

• 2

• 5

• 7

6+?=12

• 6

• 612

• 5

• 2

2+?=6

• 1

• 2

• 4

• 8

Greg found 58 eggs. Carlos found 39 less eggs. How many eggs did Carlos find?

• 19

• 21

• 29

• 97

Emery brought 41 pieces of candy home. Her dad and mom ate 27 pieces of candy. Emery was upset that she only had a bit of candy left. How many piece will Emery have to eat?

• 68

• 14

• 16

• 24

There were some robins in the tree. 35 more joined them. Now there are 93 robins in the tree. How many robins were in the tree to start?

• 93 - 35 = 58

• 93 + 35 = 128