medium Set 51 Form Exercise

20 = 12 + __

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Answer: 8

SubType
number-bonds
Total
20
KnownPart
12
MissingPart
8
Difficulty
normal

Number bond: 15 = 7 + ?

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Answer: 8

SubType
number-bonds
Total
15
KnownPart
7
MissingPart
8
Difficulty
normal

Number bond: 7 = ? + 3

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Answer: 4

SubType
number-bonds
Total
7
KnownPart
3
MissingPart
4
Difficulty
normal

Number bond: 14 = 13 + ?

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Answer: 1

SubType
number-bonds
Total
14
KnownPart
13
MissingPart
1
Difficulty
normal

12 = 1 + __

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Answer: 11

SubType
number-bonds
Total
12
KnownPart
1
MissingPart
11
Difficulty
normal

Complete the number bond: 19 = 15 + __

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Answer: 4

SubType
number-bonds
Total
19
KnownPart
15
MissingPart
4
Difficulty
normal

Number bond: 7 = 3 + ?

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Answer: 4

SubType
number-bonds
Total
7
KnownPart
3
MissingPart
4
Difficulty
normal

Number bond: 2 = 1 + ?

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Answer: 1

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