starter Set 3 Form Exercise

[1 + ?] = 13

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Answer: 12

Lhs
  • 1
  • ?
Rhs
13

[?] = 6

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Answer: 6

Lhs
  • ?
Rhs
6

[1 + ?] = 9

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Answer: 8

Lhs
  • 1
  • ?
Rhs
9

[4 + ?] = 21

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Answer: 17

Lhs
  • 4
  • ?
Rhs
21

[?] = 4

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Answer: 4

Lhs
  • ?
Rhs
4

[1 + 4 + ?] = 12

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Answer: 7

Lhs
  • 1
  • 4
  • ?
Rhs
12

[3 + 4 + ?] = 13

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Answer: 6

Lhs
  • 3
  • 4
  • ?
Rhs
13

[4 + 1 + ?] = 17

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Answer: 12

Lhs
  • 4
  • 1
  • ?
Rhs
17

[1 + 3 + ?] = 9

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Answer: 5

Lhs
  • 1
  • 3
  • ?
Rhs
9

[2 + 1 + ?] = 8

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Answer: 5

Lhs
  • 2
  • 1
  • ?
Rhs
8

[1 + 1 + ?] = 4

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Answer: 2

Lhs
  • 1
  • 1
  • ?
Rhs
4

[?] = 9

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Answer: 9

Lhs
  • ?
Rhs
9

[?] = 20

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Answer: 20

Lhs
  • ?
Rhs
20

[4 + 3 + ?] = 13

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Answer: 6

Lhs
  • 4
  • 3
  • ?
Rhs
13

[?] = 12

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Answer: 12

Lhs
  • ?
Rhs
12

[4 + ?] = 10

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Answer: 6

Lhs
  • 4
  • ?
Rhs
10

[1 + 5 + ?] = 23

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Answer: 17

Lhs
  • 1
  • 5
  • ?
Rhs
23

[?] = 16

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Answer: 16

Lhs
  • ?
Rhs
16

[?] = 20

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Answer: 20

Lhs
  • ?
Rhs
20

[4 + 1 + ?] = 14

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Answer: 9

Lhs
  • 4
  • 1
  • ?
Rhs
14