starter Set 8 Form Exercise

[4 + ?] = 21

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Answer: 17

Lhs
  • 4
  • ?
Rhs
21

[2 + ?] = 23

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Answer: 21

Lhs
  • 2
  • ?
Rhs
23

[1 + 3 + ?] = 14

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Answer: 10

Lhs
  • 1
  • 3
  • ?
Rhs
14

[1 + 1 + ?] = 4

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Answer: 2

Lhs
  • 1
  • 1
  • ?
Rhs
4

[4 + ?] = 13

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Answer: 9

Lhs
  • 4
  • ?
Rhs
13

[1 + 1 + ?] = 5

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Answer: 3

Lhs
  • 1
  • 1
  • ?
Rhs
5

[3 + ?] = 6

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Answer: 3

Lhs
  • 3
  • ?
Rhs
6

[3 + ?] = 20

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Answer: 17

Lhs
  • 3
  • ?
Rhs
20

[1 + 1 + ?] = 4

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Answer: 2

Lhs
  • 1
  • 1
  • ?
Rhs
4

[3 + 3 + ?] = 10

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Answer: 4

Lhs
  • 3
  • 3
  • ?
Rhs
10

[4 + ?] = 12

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Answer: 8

Lhs
  • 4
  • ?
Rhs
12

[3 + 2 + ?] = 23

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Answer: 18

Lhs
  • 3
  • 2
  • ?
Rhs
23

[3 + 3 + ?] = 10

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Answer: 4

Lhs
  • 3
  • 3
  • ?
Rhs
10

[7 + ?] = 14

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Answer: 7

Lhs
  • 7
  • ?
Rhs
14

[4 + ?] = 15

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Answer: 11

Lhs
  • 4
  • ?
Rhs
15

[?] = 10

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Answer: 10

Lhs
  • ?
Rhs
10

[4 + 1 + ?] = 17

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Answer: 12

Lhs
  • 4
  • 1
  • ?
Rhs
17

[?] = 11

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Answer: 11

Lhs
  • ?
Rhs
11

[3 + 1 + ?] = 14

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Answer: 10

Lhs
  • 3
  • 1
  • ?
Rhs
14

[1 + ?] = 4

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Answer: 3

Lhs
  • 1
  • ?
Rhs
4