# Using mental math to add tens or ones to a number

## Quiz by Sara Gonsiewski

Mathematics
Common Core

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20 questions
• Q1

What is the sum of 30 + 8?

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30s
1.NBT.C.4
• Q2

What is the sum of 37 + 2?

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30s
1.NBT.C.4
• Q3

What is the sum of 21 + 40?

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30s
1.NBT.C.4
• Q4

What is the sum of 20 + 5?

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30s
1.NBT.C.4
• Q5

What is the sum of 57 + 10?

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30s
1.NBT.C.4
• Q6

What is the sum of 4 + 33?

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30s
1.NBT.C.4
• Q7

What is the sum of 50 + 34?

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30s
1.NBT.C.4
• Q8

Find the missing addend: ___ + 6 = 46

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30s
1.NBT.C.4
• Q9

Find the missing addend: 60 + ___ = 68

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30s
1.NBT.C.4
• Q10

Find the missing addend: 16 + ___ = 36

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30s
1.NBT.C.4
• Q11

What is the sum for 40 + 37?

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30s
1.NBT.C.4
• Q12

Find the missing addend: ___ + 20 = 25

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30s
1.NBT.C.4
• Q13

Find the missing addend: ___+ 2 = 72

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30s
1.NBT.C.4
• Q14

Find the sum: ___ = 40 + 6

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