easy Set 21 Form Exercise

What number + 3 = 10?

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Answer: 7

SubType
complement-of-9
Total
10
KnownAddend
3
Difficulty
normal

__ + 8 = 100

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Answer: 92

SubType
complement-of-9
Total
100
KnownAddend
8
Difficulty
normal

Find the complement to 20: 10 + __ = 20

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Answer: 10

SubType
complement-of-9
Total
20
KnownAddend
10
Difficulty
normal

What number + 67 = 100?

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Answer: 33

SubType
complement-of-9
Total
100
KnownAddend
67
Difficulty
normal

What number + 51 = 100?

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Answer: 49

SubType
complement-of-9
Total
100
KnownAddend
51
Difficulty
normal

__ + 7 = 20

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Answer: 13

SubType
complement-of-9
Total
20
KnownAddend
7
Difficulty
normal

What number + 87 = 100?

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Answer: 13

SubType
complement-of-9
Total
100
KnownAddend
87
Difficulty
normal

__ + 7 = 10

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Answer: 3

SubType
complement-of-9
Total
10
KnownAddend
7
Difficulty
normal

__ + 13 = 100

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Answer: 87

SubType
complement-of-9
Total
100
KnownAddend
13
Difficulty
normal

Find the complement to 20: 18 + __ = 20

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Answer: 2

SubType
complement-of-9
Total
20
KnownAddend
18
Difficulty
normal

__ + 18 = 20

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Answer: 2

SubType
complement-of-9
Total
20
KnownAddend
18
Difficulty
normal

What number + 30 = 100?

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Answer: 70

SubType
complement-of-9
Total
100
KnownAddend
30
Difficulty
normal

What number + 5 = 10?

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Answer: 5

SubType
complement-of-9
Total
10
KnownAddend
5
Difficulty
normal

__ + 16 = 20

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Answer: 4

SubType
complement-of-9
Total
20
KnownAddend
16
Difficulty
normal

Find the complement to 10: 3 + __ = 10

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Answer: 7

SubType
complement-of-9
Total
10
KnownAddend
3
Difficulty
normal

Find the complement to 100: 22 + __ = 100

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Answer: 78

SubType
complement-of-9
Total
100
KnownAddend
22
Difficulty
normal

What number + 34 = 100?

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Answer: 66

SubType
complement-of-9
Total
100
KnownAddend
34
Difficulty
normal

What number + 62 = 100?

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Answer: 38

SubType
complement-of-9
Total
100
KnownAddend
62
Difficulty
normal

What number + 6 = 10?

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Answer: 4

SubType
complement-of-9
Total
10
KnownAddend
6
Difficulty
normal