Module 1 Review

19 + 5

• 4

• 24

• 14

Answer explanation

The answer is 24 because when I add 1 to 19 it equals 20. Then 20 plus 4 gives me the answer of 24.

58 - 5

• 53

• 50

• 3

Answer explanation

The only change happens in the ones place. I know that 8 minus 5 equals 3.

16 - 7

• 12

• 11

• 9

Answer explanation

I can use my quick tens strategy to subtract 7 from 16.

7 + 54

• 61

• 47

• 57

Answer explanation

I can use my number bond strategy to make the next ten!

47 + 50

• 17

• 97

• 57

Answer explanation

The only change happens in the tens place. I know that 40 plus 50 equals 90!

83 - 5

• 85

• 82

• 78

Answer explanation

I can use my number bond strategy to take out 10 from 83. I subtract 10 - 5, which equals 5. Then I can add 73 and 5 which gives me 78.

Trevor's mom gave him 7 stickers to start his collection. He received 24 more for his birthday. How many stickers does Trevor have now?

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James has 50 stickers and gives away 8. How many stickers does James have now?

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Tammy gave 9 markers to Sam. She started with 53 markers. How many markers does Tammy have now?

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39 + 6

• 33

• 36

• 45

Answer explanation

I can use a quick tens strategy to count forward and find the answer of 45.