starter Set 4 Form Exercise

[7 + ?] = 21

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Answer: 14

Lhs
  • 7
  • ?
Rhs
21

[4 + 4 + ?] = 13

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Answer: 5

Lhs
  • 4
  • 4
  • ?
Rhs
13

[1 + 1 + ?] = 4

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Answer: 2

Lhs
  • 1
  • 1
  • ?
Rhs
4

[5 + ?] = 10

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Answer: 5

Lhs
  • 5
  • ?
Rhs
10

[1 + ?] = 5

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Answer: 4

Lhs
  • 1
  • ?
Rhs
5

[2 + 1 + ?] = 8

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Answer: 5

Lhs
  • 2
  • 1
  • ?
Rhs
8

[2 + 2 + ?] = 10

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Answer: 6

Lhs
  • 2
  • 2
  • ?
Rhs
10

[3 + 2 + ?] = 17

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Answer: 12

Lhs
  • 3
  • 2
  • ?
Rhs
17

[1 + 2 + ?] = 20

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Answer: 17

Lhs
  • 1
  • 2
  • ?
Rhs
20

[1 + 2 + ?] = 20

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Answer: 17

Lhs
  • 1
  • 2
  • ?
Rhs
20

[1 + 1 + ?] = 6

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Answer: 4

Lhs
  • 1
  • 1
  • ?
Rhs
6

[1 + 2 + ?] = 14

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Answer: 11

Lhs
  • 1
  • 2
  • ?
Rhs
14

[?] = 10

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Answer: 10

Lhs
  • ?
Rhs
10

[3 + ?] = 13

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Answer: 10

Lhs
  • 3
  • ?
Rhs
13

[3 + 1 + ?] = 14

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Answer: 10

Lhs
  • 3
  • 1
  • ?
Rhs
14

[4 + ?] = 15

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Answer: 11

Lhs
  • 4
  • ?
Rhs
15

[?] = 14

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Answer: 14

Lhs
  • ?
Rhs
14

[1 + 1 + ?] = 9

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Answer: 7

Lhs
  • 1
  • 1
  • ?
Rhs
9

[1 + 1 + ?] = 4

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Answer: 2

Lhs
  • 1
  • 1
  • ?
Rhs
4

[1 + 2 + ?] = 6

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Answer: 3

Lhs
  • 1
  • 2
  • ?
Rhs
6