medium Set 87 Form Exercise

Number bond: 79 = ? + 29

Show answer

Answer: 50

SubType
number-bonds
Total
79
KnownPart
29
MissingPart
50
Difficulty
normal

55 = __ + 8

Show answer

Answer: 47

SubType
number-bonds
Total
55
KnownPart
8
MissingPart
47
Difficulty
normal

33 = __ + 29

Show answer

Answer: 4

SubType
number-bonds
Total
33
KnownPart
29
MissingPart
4
Difficulty
normal

82 = __ + 57

Show answer

Answer: 25

SubType
number-bonds
Total
82
KnownPart
57
MissingPart
25
Difficulty
normal

Number bond: 57 = ? + 49

Show answer

Answer: 8

SubType
number-bonds
Total
57
KnownPart
49
MissingPart
8
Difficulty
normal

89 = __ + 42

Show answer

Answer: 47

SubType
number-bonds
Total
89
KnownPart
42
MissingPart
47
Difficulty
normal

47 = 1 + __

Show answer

Answer: 46

SubType
number-bonds
Total
47
KnownPart
1
MissingPart
46
Difficulty
normal

Number bond: 40 = 16 + ?

Show answer

Answer: 24

SubType
number-bonds
Total
40
KnownPart
16
MissingPart
24
Difficulty
normal