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MathsAges 7-9

Doubling & halving

Double a whole number or find half of an even number to build rapid mental arithmetic. Review suitability for your learners before teaching.

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Age band:Ages 4-6Ages 7-9

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Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 39?

    39 · Doubling & halving

  2. 2. What is half of 28?

    28 · Doubling & halving

  3. 3. What is double 29?

    29 · Doubling & halving

  4. 4. What is double 48?

    48 · Doubling & halving

  5. 5. What is half of 42?

    42 · Doubling & halving

  6. 6. What is double 14?

    14 · Doubling & halving

  7. 7. What is double 11?

    11 · Doubling & halving

  8. 8. What is half of 82?

    82 · Doubling & halving

  9. 9. What is half of 26?

    26 · Doubling & halving

  10. 10. What is double 33?

    33 · Doubling & halving

  11. 11. What is half of 16?

    16 · Doubling & halving

  12. 12. What is double 42?

    42 · Doubling & halving
12 questions · Seed 48 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 39?

    78

    Double 39 is 39 + 39 = 78.

  2. 2. What is half of 28?

    14

    Half of 28 is 28 ÷ 2 = 14.

  3. 3. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

  4. 4. What is double 48?

    96

    Double 48 is 48 + 48 = 96.

  5. 5. What is half of 42?

    21

    Half of 42 is 42 ÷ 2 = 21.

  6. 6. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

  7. 7. What is double 11?

    22

    Double 11 is 11 + 11 = 22.

  8. 8. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  9. 9. What is half of 26?

    13

    Half of 26 is 26 ÷ 2 = 13.

  10. 10. What is double 33?

    66

    Double 33 is 33 + 33 = 66.

  11. 11. What is half of 16?

    8

    Half of 16 is 16 ÷ 2 = 8.

  12. 12. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

12 questions · Seed 48 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 39?

    39 · Doubling & halving

  2. 2. What is half of 28?

    28 · Doubling & halving

  3. 3. What is double 29?

    29 · Doubling & halving

  4. 4. What is double 48?

    48 · Doubling & halving

  5. 5. What is half of 42?

    42 · Doubling & halving

  6. 6. What is double 14?

    14 · Doubling & halving

  7. 7. What is double 11?

    11 · Doubling & halving

  8. 8. What is half of 82?

    82 · Doubling & halving

  9. 9. What is half of 26?

    26 · Doubling & halving

  10. 10. What is double 33?

    33 · Doubling & halving

  11. 11. What is half of 16?

    16 · Doubling & halving

  12. 12. What is double 42?

    42 · Doubling & halving
12 questions · Seed 48 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 39?

    78

    Double 39 is 39 + 39 = 78.

  2. 2. What is half of 28?

    14

    Half of 28 is 28 ÷ 2 = 14.

  3. 3. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

  4. 4. What is double 48?

    96

    Double 48 is 48 + 48 = 96.

  5. 5. What is half of 42?

    21

    Half of 42 is 42 ÷ 2 = 21.

  6. 6. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

  7. 7. What is double 11?

    22

    Double 11 is 11 + 11 = 22.

  8. 8. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  9. 9. What is half of 26?

    13

    Half of 26 is 26 ÷ 2 = 13.

  10. 10. What is double 33?

    66

    Double 33 is 33 + 33 = 66.

  11. 11. What is half of 16?

    8

    Half of 16 is 16 ÷ 2 = 8.

  12. 12. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

12 questions · Seed 48 · Age guidance, not curriculum certification