easy Set 18 Form Exercise

Find the complement to 20: 19 + __ = 20

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Answer: 1

SubType
complement-of-100
Total
20
KnownAddend
19
Difficulty
normal

Find the complement to 20: 2 + __ = 20

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Answer: 18

SubType
complement-of-100
Total
20
KnownAddend
2
Difficulty
normal

__ + 17 = 20

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Answer: 3

SubType
complement-of-100
Total
20
KnownAddend
17
Difficulty
normal

What number + 39 = 100?

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Answer: 61

SubType
complement-of-100
Total
100
KnownAddend
39
Difficulty
normal

Find the complement to 10: 7 + __ = 10

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Answer: 3

SubType
complement-of-100
Total
10
KnownAddend
7
Difficulty
normal

Find the complement to 20: 13 + __ = 20

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Answer: 7

SubType
complement-of-100
Total
20
KnownAddend
13
Difficulty
normal

__ + 8 = 20

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Answer: 12

SubType
complement-of-100
Total
20
KnownAddend
8
Difficulty
normal

What number + 17 = 20?

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Answer: 3

SubType
complement-of-100
Total
20
KnownAddend
17
Difficulty
normal

__ + 6 = 10

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Answer: 4

SubType
complement-of-100
Total
10
KnownAddend
6
Difficulty
normal

__ + 2 = 20

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Answer: 18

SubType
complement-of-100
Total
20
KnownAddend
2
Difficulty
normal

__ + 4 = 20

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Answer: 16

SubType
complement-of-100
Total
20
KnownAddend
4
Difficulty
normal

__ + 52 = 100

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Answer: 48

SubType
complement-of-100
Total
100
KnownAddend
52
Difficulty
normal

Find the complement to 20: 15 + __ = 20

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Answer: 5

SubType
complement-of-100
Total
20
KnownAddend
15
Difficulty
normal

Find the complement to 100: 15 + __ = 100

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Answer: 85

SubType
complement-of-100
Total
100
KnownAddend
15
Difficulty
normal

__ + 44 = 100

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Answer: 56

SubType
complement-of-100
Total
100
KnownAddend
44
Difficulty
normal

What number + 47 = 100?

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Answer: 53

SubType
complement-of-100
Total
100
KnownAddend
47
Difficulty
normal

What number + 9 = 20?

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Answer: 11

SubType
complement-of-100
Total
20
KnownAddend
9
Difficulty
normal

Find the complement to 100: 42 + __ = 100

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Answer: 58

SubType
complement-of-100
Total
100
KnownAddend
42
Difficulty
normal

What number + 70 = 100?

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Answer: 30

SubType
complement-of-100
Total
100
KnownAddend
70
Difficulty
normal