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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 28?

    28 · Doubling & halving

  2. 2. What is double 19?

    19 · Doubling & halving

  3. 3. What is half of 92?

    92 · Doubling & halving

  4. 4. What is double 20?

    20 · Doubling & halving

  5. 5. What is half of 36?

    36 · Doubling & halving

  6. 6. What is half of 84?

    84 · Doubling & halving

  7. 7. What is double 12?

    12 · Doubling & halving

  8. 8. What is half of 96?

    96 · Doubling & halving

  9. 9. What is half of 20?

    20 · Doubling & halving

  10. 10. What is half of 18?

    18 · Doubling & halving

  11. 11. What is half of 80?

    80 · Doubling & halving

  12. 12. What is half of 32?

    32 · Doubling & halving
12 questions · Seed 104741 · 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 28?

    56

    Double 28 is 28 + 28 = 56.

  2. 2. What is double 19?

    38

    Double 19 is 19 + 19 = 38.

  3. 3. What is half of 92?

    46

    Half of 92 is 92 ÷ 2 = 46.

  4. 4. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  5. 5. What is half of 36?

    18

    Half of 36 is 36 ÷ 2 = 18.

  6. 6. What is half of 84?

    42

    Half of 84 is 84 ÷ 2 = 42.

  7. 7. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  8. 8. What is half of 96?

    48

    Half of 96 is 96 ÷ 2 = 48.

  9. 9. What is half of 20?

    10

    Half of 20 is 20 ÷ 2 = 10.

  10. 10. What is half of 18?

    9

    Half of 18 is 18 ÷ 2 = 9.

  11. 11. What is half of 80?

    40

    Half of 80 is 80 ÷ 2 = 40.

  12. 12. What is half of 32?

    16

    Half of 32 is 32 ÷ 2 = 16.

12 questions · Seed 104741 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 28?

    28 · Doubling & halving

  2. 2. What is double 19?

    19 · Doubling & halving

  3. 3. What is half of 92?

    92 · Doubling & halving

  4. 4. What is double 20?

    20 · Doubling & halving

  5. 5. What is half of 36?

    36 · Doubling & halving

  6. 6. What is half of 84?

    84 · Doubling & halving

  7. 7. What is double 12?

    12 · Doubling & halving

  8. 8. What is half of 96?

    96 · Doubling & halving

  9. 9. What is half of 20?

    20 · Doubling & halving

  10. 10. What is half of 18?

    18 · Doubling & halving

  11. 11. What is half of 80?

    80 · Doubling & halving

  12. 12. What is half of 32?

    32 · Doubling & halving
12 questions · Seed 104741 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 28?

    56

    Double 28 is 28 + 28 = 56.

  2. 2. What is double 19?

    38

    Double 19 is 19 + 19 = 38.

  3. 3. What is half of 92?

    46

    Half of 92 is 92 ÷ 2 = 46.

  4. 4. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  5. 5. What is half of 36?

    18

    Half of 36 is 36 ÷ 2 = 18.

  6. 6. What is half of 84?

    42

    Half of 84 is 84 ÷ 2 = 42.

  7. 7. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  8. 8. What is half of 96?

    48

    Half of 96 is 96 ÷ 2 = 48.

  9. 9. What is half of 20?

    10

    Half of 20 is 20 ÷ 2 = 10.

  10. 10. What is half of 18?

    9

    Half of 18 is 18 ÷ 2 = 9.

  11. 11. What is half of 80?

    40

    Half of 80 is 80 ÷ 2 = 40.

  12. 12. What is half of 32?

    16

    Half of 32 is 32 ÷ 2 = 16.

12 questions · Seed 104741 · Age guidance, not curriculum certification