easy Set 27 Form Exercise

__ + 9 = 20

Show answer

Answer: 11

SubType
complement-of-9
Total
20
KnownAddend
9
Difficulty
normal

What number + 4 = 10?

Show answer

Answer: 6

SubType
complement-of-9
Total
10
KnownAddend
4
Difficulty
normal

__ + 11 = 20

Show answer

Answer: 9

SubType
complement-of-9
Total
20
KnownAddend
11
Difficulty
normal

What number + 44 = 100?

Show answer

Answer: 56

SubType
complement-of-9
Total
100
KnownAddend
44
Difficulty
normal

__ + 70 = 100

Show answer

Answer: 30

SubType
complement-of-9
Total
100
KnownAddend
70
Difficulty
normal

Find the complement to 20: 9 + __ = 20

Show answer

Answer: 11

SubType
complement-of-9
Total
20
KnownAddend
9
Difficulty
normal

Find the complement to 100: 97 + __ = 100

Show answer

Answer: 3

SubType
complement-of-9
Total
100
KnownAddend
97
Difficulty
normal

Find the complement to 10: 2 + __ = 10

Show answer

Answer: 8

SubType
complement-of-9
Total
10
KnownAddend
2
Difficulty
normal

__ + 7 = 20

Show answer

Answer: 13

SubType
complement-of-9
Total
20
KnownAddend
7
Difficulty
normal

Find the complement to 100: 59 + __ = 100

Show answer

Answer: 41

SubType
complement-of-9
Total
100
KnownAddend
59
Difficulty
normal

__ + 3 = 10

Show answer

Answer: 7

SubType
complement-of-9
Total
10
KnownAddend
3
Difficulty
normal

__ + 5 = 10

Show answer

Answer: 5

SubType
complement-of-9
Total
10
KnownAddend
5
Difficulty
normal

__ + 1 = 20

Show answer

Answer: 19

SubType
complement-of-9
Total
20
KnownAddend
1
Difficulty
normal

__ + 4 = 10

Show answer

Answer: 6

SubType
complement-of-9
Total
10
KnownAddend
4
Difficulty
normal

Find the complement to 100: 53 + __ = 100

Show answer

Answer: 47

SubType
complement-of-9
Total
100
KnownAddend
53
Difficulty
normal

__ + 2 = 20

Show answer

Answer: 18

SubType
complement-of-9
Total
20
KnownAddend
2
Difficulty
normal

Find the complement to 10: 9 + __ = 10

Show answer

Answer: 1

SubType
complement-of-9
Total
10
KnownAddend
9
Difficulty
normal

Find the complement to 20: 4 + __ = 20

Show answer

Answer: 16

SubType
complement-of-9
Total
20
KnownAddend
4
Difficulty
normal

__ + 29 = 100

Show answer

Answer: 71

SubType
complement-of-9
Total
100
KnownAddend
29
Difficulty
normal

__ + 28 = 100

Show answer

Answer: 72

SubType
complement-of-9
Total
100
KnownAddend
28
Difficulty
normal