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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 42?

    42 · Doubling & halving

  2. 2. What is half of 52?

    52 · Doubling & halving

  3. 3. What is double 42?

    42 · Doubling & halving

  4. 4. What is double 34?

    34 · Doubling & halving

  5. 5. What is half of 88?

    88 · Doubling & halving

  6. 6. What is double 12?

    12 · Doubling & halving

  7. 7. What is double 35?

    35 · Doubling & halving

  8. 8. What is half of 64?

    64 · Doubling & halving

  9. 9. What is double 19?

    19 · Doubling & halving

  10. 10. What is double 24?

    24 · Doubling & halving

  11. 11. What is double 25?

    25 · Doubling & halving

  12. 12. What is half of 26?

    26 · Doubling & halving
12 questions · Seed 47 · 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 42?

    21

    Half of 42 is 42 ÷ 2 = 21.

  2. 2. What is half of 52?

    26

    Half of 52 is 52 ÷ 2 = 26.

  3. 3. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  4. 4. What is double 34?

    68

    Double 34 is 34 + 34 = 68.

  5. 5. What is half of 88?

    44

    Half of 88 is 88 ÷ 2 = 44.

  6. 6. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  7. 7. What is double 35?

    70

    Double 35 is 35 + 35 = 70.

  8. 8. What is half of 64?

    32

    Half of 64 is 64 ÷ 2 = 32.

  9. 9. What is double 19?

    38

    Double 19 is 19 + 19 = 38.

  10. 10. What is double 24?

    48

    Double 24 is 24 + 24 = 48.

  11. 11. What is double 25?

    50

    Double 25 is 25 + 25 = 50.

  12. 12. What is half of 26?

    13

    Half of 26 is 26 ÷ 2 = 13.

12 questions · Seed 47 · 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 42?

    42 · Doubling & halving

  2. 2. What is half of 52?

    52 · Doubling & halving

  3. 3. What is double 42?

    42 · Doubling & halving

  4. 4. What is double 34?

    34 · Doubling & halving

  5. 5. What is half of 88?

    88 · Doubling & halving

  6. 6. What is double 12?

    12 · Doubling & halving

  7. 7. What is double 35?

    35 · Doubling & halving

  8. 8. What is half of 64?

    64 · Doubling & halving

  9. 9. What is double 19?

    19 · Doubling & halving

  10. 10. What is double 24?

    24 · Doubling & halving

  11. 11. What is double 25?

    25 · Doubling & halving

  12. 12. What is half of 26?

    26 · Doubling & halving
12 questions · Seed 47 · 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 42?

    21

    Half of 42 is 42 ÷ 2 = 21.

  2. 2. What is half of 52?

    26

    Half of 52 is 52 ÷ 2 = 26.

  3. 3. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  4. 4. What is double 34?

    68

    Double 34 is 34 + 34 = 68.

  5. 5. What is half of 88?

    44

    Half of 88 is 88 ÷ 2 = 44.

  6. 6. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  7. 7. What is double 35?

    70

    Double 35 is 35 + 35 = 70.

  8. 8. What is half of 64?

    32

    Half of 64 is 64 ÷ 2 = 32.

  9. 9. What is double 19?

    38

    Double 19 is 19 + 19 = 38.

  10. 10. What is double 24?

    48

    Double 24 is 24 + 24 = 48.

  11. 11. What is double 25?

    50

    Double 25 is 25 + 25 = 50.

  12. 12. What is half of 26?

    13

    Half of 26 is 26 ÷ 2 = 13.

12 questions · Seed 47 · Age guidance, not curriculum certification