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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 64?

    64 · Doubling & halving

  2. 2. What is double 23?

    23 · Doubling & halving

  3. 3. What is double 43?

    43 · Doubling & halving

  4. 4. What is double 14?

    14 · Doubling & halving

  5. 5. What is half of 50?

    50 · Doubling & halving

  6. 6. What is double 10?

    10 · Doubling & halving

  7. 7. What is double 41?

    41 · Doubling & halving

  8. 8. What is half of 30?

    30 · Doubling & halving

  9. 9. What is half of 68?

    68 · Doubling & halving

  10. 10. What is half of 82?

    82 · Doubling & halving

  11. 11. What is double 24?

    24 · Doubling & halving

  12. 12. What is half of 28?

    28 · Doubling & halving
12 questions · Seed 104735 · 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 64?

    32

    Half of 64 is 64 ÷ 2 = 32.

  2. 2. What is double 23?

    46

    Double 23 is 23 + 23 = 46.

  3. 3. What is double 43?

    86

    Double 43 is 43 + 43 = 86.

  4. 4. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

  5. 5. What is half of 50?

    25

    Half of 50 is 50 ÷ 2 = 25.

  6. 6. What is double 10?

    20

    Double 10 is 10 + 10 = 20.

  7. 7. What is double 41?

    82

    Double 41 is 41 + 41 = 82.

  8. 8. What is half of 30?

    15

    Half of 30 is 30 ÷ 2 = 15.

  9. 9. What is half of 68?

    34

    Half of 68 is 68 ÷ 2 = 34.

  10. 10. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  11. 11. What is double 24?

    48

    Double 24 is 24 + 24 = 48.

  12. 12. What is half of 28?

    14

    Half of 28 is 28 ÷ 2 = 14.

12 questions · Seed 104735 · 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 64?

    64 · Doubling & halving

  2. 2. What is double 23?

    23 · Doubling & halving

  3. 3. What is double 43?

    43 · Doubling & halving

  4. 4. What is double 14?

    14 · Doubling & halving

  5. 5. What is half of 50?

    50 · Doubling & halving

  6. 6. What is double 10?

    10 · Doubling & halving

  7. 7. What is double 41?

    41 · Doubling & halving

  8. 8. What is half of 30?

    30 · Doubling & halving

  9. 9. What is half of 68?

    68 · Doubling & halving

  10. 10. What is half of 82?

    82 · Doubling & halving

  11. 11. What is double 24?

    24 · Doubling & halving

  12. 12. What is half of 28?

    28 · Doubling & halving
12 questions · Seed 104735 · 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 64?

    32

    Half of 64 is 64 ÷ 2 = 32.

  2. 2. What is double 23?

    46

    Double 23 is 23 + 23 = 46.

  3. 3. What is double 43?

    86

    Double 43 is 43 + 43 = 86.

  4. 4. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

  5. 5. What is half of 50?

    25

    Half of 50 is 50 ÷ 2 = 25.

  6. 6. What is double 10?

    20

    Double 10 is 10 + 10 = 20.

  7. 7. What is double 41?

    82

    Double 41 is 41 + 41 = 82.

  8. 8. What is half of 30?

    15

    Half of 30 is 30 ÷ 2 = 15.

  9. 9. What is half of 68?

    34

    Half of 68 is 68 ÷ 2 = 34.

  10. 10. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  11. 11. What is double 24?

    48

    Double 24 is 24 + 24 = 48.

  12. 12. What is half of 28?

    14

    Half of 28 is 28 ÷ 2 = 14.

12 questions · Seed 104735 · Age guidance, not curriculum certification