easy Set 80 Form Exercise

Find the complement to 20: 9 + __ = 20

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Answer: 11

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

__ + 6 = 10

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Answer: 4

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

Find the complement to 10: 1 + __ = 10

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Answer: 9

SubType
complement-of-9
Total
10
KnownAddend
1
Difficulty
normal

What number + 6 = 10?

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Answer: 4

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

What number + 4 = 20?

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Answer: 16

SubType
complement-of-9
Total
20
KnownAddend
4
Difficulty
normal

Find the complement to 100: 43 + __ = 100

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Answer: 57

SubType
complement-of-9
Total
100
KnownAddend
43
Difficulty
normal

__ + 3 = 20

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Answer: 17

SubType
complement-of-9
Total
20
KnownAddend
3
Difficulty
normal

What number + 15 = 20?

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Answer: 5

SubType
complement-of-9
Total
20
KnownAddend
15
Difficulty
normal

__ + 1 = 20

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Answer: 19

SubType
complement-of-9
Total
20
KnownAddend
1
Difficulty
normal

__ + 9 = 10

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Answer: 1

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

What number + 1 = 10?

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Answer: 9

SubType
complement-of-9
Total
10
KnownAddend
1
Difficulty
normal

Find the complement to 10: 7 + __ = 10

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Answer: 3

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

__ + 44 = 100

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Answer: 56

SubType
complement-of-9
Total
100
KnownAddend
44
Difficulty
normal

What number + 68 = 100?

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Answer: 32

SubType
complement-of-9
Total
100
KnownAddend
68
Difficulty
normal

__ + 13 = 20

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Answer: 7

SubType
complement-of-9
Total
20
KnownAddend
13
Difficulty
normal

What number + 3 = 20?

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Answer: 17

SubType
complement-of-9
Total
20
KnownAddend
3
Difficulty
normal

What number + 12 = 20?

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Answer: 8

SubType
complement-of-9
Total
20
KnownAddend
12
Difficulty
normal

__ + 10 = 20

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Answer: 10

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