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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 half of 54?

    54 · Doubling & halving

  2. 2. What is double 40?

    40 · Doubling & halving

  3. 3. What is double 24?

    24 · Doubling & halving

  4. 4. What is half of 80?

    80 · Doubling & halving

  5. 5. What is half of 44?

    44 · Doubling & halving

  6. 6. What is half of 90?

    90 · Doubling & halving

  7. 7. What is half of 36?

    36 · Doubling & halving

  8. 8. What is half of 62?

    62 · Doubling & halving

  9. 9. What is half of 40?

    40 · Doubling & halving

  10. 10. What is half of 26?

    26 · Doubling & halving

  11. 11. What is half of 64?

    64 · Doubling & halving

  12. 12. What is double 12?

    12 · Doubling & halving
12 questions · Seed 104734 · 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 half of 54?

    27

    Half of 54 is 54 ÷ 2 = 27.

  2. 2. What is double 40?

    80

    Double 40 is 40 + 40 = 80.

  3. 3. What is double 24?

    48

    Double 24 is 24 + 24 = 48.

  4. 4. What is half of 80?

    40

    Half of 80 is 80 ÷ 2 = 40.

  5. 5. What is half of 44?

    22

    Half of 44 is 44 ÷ 2 = 22.

  6. 6. What is half of 90?

    45

    Half of 90 is 90 ÷ 2 = 45.

  7. 7. What is half of 36?

    18

    Half of 36 is 36 ÷ 2 = 18.

  8. 8. What is half of 62?

    31

    Half of 62 is 62 ÷ 2 = 31.

  9. 9. What is half of 40?

    20

    Half of 40 is 40 ÷ 2 = 20.

  10. 10. What is half of 26?

    13

    Half of 26 is 26 ÷ 2 = 13.

  11. 11. What is half of 64?

    32

    Half of 64 is 64 ÷ 2 = 32.

  12. 12. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

12 questions · Seed 104734 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is half of 54?

    54 · Doubling & halving

  2. 2. What is double 40?

    40 · Doubling & halving

  3. 3. What is double 24?

    24 · Doubling & halving

  4. 4. What is half of 80?

    80 · Doubling & halving

  5. 5. What is half of 44?

    44 · Doubling & halving

  6. 6. What is half of 90?

    90 · Doubling & halving

  7. 7. What is half of 36?

    36 · Doubling & halving

  8. 8. What is half of 62?

    62 · Doubling & halving

  9. 9. What is half of 40?

    40 · Doubling & halving

  10. 10. What is half of 26?

    26 · Doubling & halving

  11. 11. What is half of 64?

    64 · Doubling & halving

  12. 12. What is double 12?

    12 · Doubling & halving
12 questions · Seed 104734 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is half of 54?

    27

    Half of 54 is 54 ÷ 2 = 27.

  2. 2. What is double 40?

    80

    Double 40 is 40 + 40 = 80.

  3. 3. What is double 24?

    48

    Double 24 is 24 + 24 = 48.

  4. 4. What is half of 80?

    40

    Half of 80 is 80 ÷ 2 = 40.

  5. 5. What is half of 44?

    22

    Half of 44 is 44 ÷ 2 = 22.

  6. 6. What is half of 90?

    45

    Half of 90 is 90 ÷ 2 = 45.

  7. 7. What is half of 36?

    18

    Half of 36 is 36 ÷ 2 = 18.

  8. 8. What is half of 62?

    31

    Half of 62 is 62 ÷ 2 = 31.

  9. 9. What is half of 40?

    20

    Half of 40 is 40 ÷ 2 = 20.

  10. 10. What is half of 26?

    13

    Half of 26 is 26 ÷ 2 = 13.

  11. 11. What is half of 64?

    32

    Half of 64 is 64 ÷ 2 = 32.

  12. 12. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

12 questions · Seed 104734 · Age guidance, not curriculum certification