easy Set 21 Form Exercise

What number + 35 = 100?

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Answer: 65

SubType
complement-of-100
Total
100
KnownAddend
35
Difficulty
normal

What number + 37 = 100?

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Answer: 63

SubType
complement-of-100
Total
100
KnownAddend
37
Difficulty
normal

__ + 31 = 100

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Answer: 69

SubType
complement-of-100
Total
100
KnownAddend
31
Difficulty
normal

__ + 4 = 10

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Answer: 6

SubType
complement-of-100
Total
10
KnownAddend
4
Difficulty
normal

What number + 11 = 20?

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Answer: 9

SubType
complement-of-100
Total
20
KnownAddend
11
Difficulty
normal

__ + 8 = 10

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Answer: 2

SubType
complement-of-100
Total
10
KnownAddend
8
Difficulty
normal

What number + 4 = 10?

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Answer: 6

SubType
complement-of-100
Total
10
KnownAddend
4
Difficulty
normal

__ + 12 = 20

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Answer: 8

SubType
complement-of-100
Total
20
KnownAddend
12
Difficulty
normal

Find the complement to 20: 16 + __ = 20

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Answer: 4

SubType
complement-of-100
Total
20
KnownAddend
16
Difficulty
normal

__ + 13 = 100

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Answer: 87

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

__ + 40 = 100

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Answer: 60

SubType
complement-of-100
Total
100
KnownAddend
40
Difficulty
normal

Find the complement to 20: 11 + __ = 20

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Answer: 9

SubType
complement-of-100
Total
20
KnownAddend
11
Difficulty
normal

__ + 7 = 100

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Answer: 93

SubType
complement-of-100
Total
100
KnownAddend
7
Difficulty
normal

What number + 89 = 100?

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Answer: 11

SubType
complement-of-100
Total
100
KnownAddend
89
Difficulty
normal

What number + 16 = 20?

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Answer: 4

SubType
complement-of-100
Total
20
KnownAddend
16
Difficulty
normal

What number + 5 = 10?

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Answer: 5

SubType
complement-of-100
Total
10
KnownAddend
5
Difficulty
normal

Find the complement to 100: 57 + __ = 100

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Answer: 43

SubType
complement-of-100
Total
100
KnownAddend
57
Difficulty
normal

__ + 7 = 20

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Answer: 13

SubType
complement-of-100
Total
20
KnownAddend
7
Difficulty
normal

__ + 9 = 10

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Answer: 1

SubType
complement-of-100
Total
10
KnownAddend
9
Difficulty
normal