starter Set 1 Form Exercise

[2 + ?] = 7

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Answer: 5

Lhs
  • 2
  • ?
Rhs
7

[2 + 1 + ?] = 19

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Answer: 16

Lhs
  • 2
  • 1
  • ?
Rhs
19

[1 + 3 + ?] = 12

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Answer: 8

Lhs
  • 1
  • 3
  • ?
Rhs
12

[1 + ?] = 10

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Answer: 9

Lhs
  • 1
  • ?
Rhs
10

[?] = 21

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Answer: 21

Lhs
  • ?
Rhs
21

[2 + ?] = 4

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Answer: 2

Lhs
  • 2
  • ?
Rhs
4

[?] = 14

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Answer: 14

Lhs
  • ?
Rhs
14

[1 + ?] = 10

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Answer: 9

Lhs
  • 1
  • ?
Rhs
10

[2 + 3 + ?] = 15

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Answer: 10

Lhs
  • 2
  • 3
  • ?
Rhs
15

[2 + ?] = 8

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Answer: 6

Lhs
  • 2
  • ?
Rhs
8

[1 + 7 + ?] = 22

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Answer: 14

Lhs
  • 1
  • 7
  • ?
Rhs
22

[?] = 21

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Answer: 21

Lhs
  • ?
Rhs
21

[?] = 4

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Answer: 4

Lhs
  • ?
Rhs
4

[?] = 10

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Answer: 10

Lhs
  • ?
Rhs
10

[?] = 14

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Answer: 14

Lhs
  • ?
Rhs
14

[?] = 7

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Answer: 7

Lhs
  • ?
Rhs
7

[5 + ?] = 12

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Answer: 7

Lhs
  • 5
  • ?
Rhs
12

[2 + ?] = 11

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Answer: 9

Lhs
  • 2
  • ?
Rhs
11

[4 + ?] = 21

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Answer: 17

Lhs
  • 4
  • ?
Rhs
21

[2 + 3 + ?] = 9

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Answer: 4

Lhs
  • 2
  • 3
  • ?
Rhs
9