medium Set 90 Form Exercise

20 = 4 + __

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Answer: 16

SubType
number-bonds
Total
20
KnownPart
4
MissingPart
16
Difficulty
normal

3 = 1 + __

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Answer: 2

SubType
number-bonds
Total
3
KnownPart
1
MissingPart
2
Difficulty
normal

10 = __ + 6

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Answer: 4

SubType
number-bonds
Total
10
KnownPart
6
MissingPart
4
Difficulty
normal

12 = 3 + __

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Answer: 9

SubType
number-bonds
Total
12
KnownPart
3
MissingPart
9
Difficulty
normal

11 = 4 + __

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Answer: 7

SubType
number-bonds
Total
11
KnownPart
4
MissingPart
7
Difficulty
normal

Number bond: 15 = 2 + ?

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Answer: 13

SubType
number-bonds
Total
15
KnownPart
2
MissingPart
13
Difficulty
normal

Complete the number bond: 9 = __ + 8

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Answer: 1

SubType
number-bonds
Total
9
KnownPart
8
MissingPart
1
Difficulty
normal

Complete the number bond: 6 = __ + 2

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Answer: 4

SubType
number-bonds
Total
6
KnownPart
2
MissingPart
4
Difficulty
normal