Unit 10 Review

Jade found the sum of 50 + 7

• 42

• 45

• 52

• 57

Select the model that shows 31.

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Which model shows how to find the sum of 6 and 15?

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• 
• 

Which equation is represented by the model?

• 41 – 4 = 37

• 31 – 4 = 27

• 31 – 5 = 26

Select the base ten model that shows 13 + 9

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• 
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Select the unknown value.

? = 83 – 8

• 62

• 67

• 65

• 75

Which group of base ten blocks does NOT have a total of 65?

• 4 tens + 25 ones

• 6 tens + 5 ones

• 3 tens + 45 ones

James started adding 27 + 5. His work is shown here.

What should he do next?

• Nothing

• Add 1

• Add 2

• Add 3

Which number added to 3 equals 52?

• 35

• 45

• 55

• 65

Which equation does not require breaking apart a ten to subtract?

• 61 - 5 = ?

• 22 – 8 = ?

• 39 – 4 = ?

• 51 - 6 =?