medium Set 80 Form Exercise

Complete the number bond: 17 = 15 + __

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Answer: 2

SubType
number-bonds
Total
17
KnownPart
15
MissingPart
2
Difficulty
normal

13 = __ + 7

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Answer: 6

SubType
number-bonds
Total
13
KnownPart
7
MissingPart
6
Difficulty
normal

Number bond: 6 = 4 + ?

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Answer: 2

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

2 = __ + 1

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Answer: 1

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

Number bond: 15 = 6 + ?

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Answer: 9

SubType
number-bonds
Total
15
KnownPart
6
MissingPart
9
Difficulty
normal

Number bond: 14 = ? + 9

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Answer: 5

SubType
number-bonds
Total
14
KnownPart
9
MissingPart
5
Difficulty
normal

Number bond: 2 = 1 + ?

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Answer: 1

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

Number bond: 17 = ? + 4

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Answer: 13

SubType
number-bonds
Total
17
KnownPart
4
MissingPart
13
Difficulty
normal