medium Set 70 Form Exercise

Number bond: 8 = 2 + ?

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Answer: 6

SubType
number-bonds
Total
8
KnownPart
2
MissingPart
6
Difficulty
normal

13 = 4 + __

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Answer: 9

SubType
number-bonds
Total
13
KnownPart
4
MissingPart
9
Difficulty
normal

Number bond: 9 = 2 + ?

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Answer: 7

SubType
number-bonds
Total
9
KnownPart
2
MissingPart
7
Difficulty
normal

Number bond: 5 = 4 + ?

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Answer: 1

SubType
number-bonds
Total
5
KnownPart
4
MissingPart
1
Difficulty
normal

Number bond: 9 = ? + 8

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Answer: 1

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

Number bond: 10 = ? + 1

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Answer: 9

SubType
number-bonds
Total
10
KnownPart
1
MissingPart
9
Difficulty
normal

Number bond: 20 = 12 + ?

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Answer: 8

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

Complete the number bond: 4 = 1 + __

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Answer: 3

SubType
number-bonds
Total
4
KnownPart
1
MissingPart
3
Difficulty
normal