medium Set 15 Form Exercise

Number bond: 99 = ? + 39

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Answer: 60

SubType
number-bonds
Total
99
KnownPart
39
MissingPart
60
Difficulty
normal

88 = 8 + __

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Answer: 80

SubType
number-bonds
Total
88
KnownPart
8
MissingPart
80
Difficulty
normal

Number bond: 98 = 85 + ?

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Answer: 13

SubType
number-bonds
Total
98
KnownPart
85
MissingPart
13
Difficulty
normal

74 = __ + 38

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Answer: 36

SubType
number-bonds
Total
74
KnownPart
38
MissingPart
36
Difficulty
normal

Number bond: 25 = 12 + ?

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Answer: 13

SubType
number-bonds
Total
25
KnownPart
12
MissingPart
13
Difficulty
normal

54 = 30 + __

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Answer: 24

SubType
number-bonds
Total
54
KnownPart
30
MissingPart
24
Difficulty
normal

70 = __ + 36

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Answer: 34

SubType
number-bonds
Total
70
KnownPart
36
MissingPart
34
Difficulty
normal

Number bond: 14 = ? + 12

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Answer: 2

SubType
number-bonds
Total
14
KnownPart
12
MissingPart
2
Difficulty
normal