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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 46?

    46 · Doubling & halving

  2. 2. What is half of 18?

    18 · Doubling & halving

  3. 3. What is double 48?

    48 · Doubling & halving

  4. 4. What is half of 96?

    96 · Doubling & halving

  5. 5. What is half of 34?

    34 · Doubling & halving

  6. 6. What is double 20?

    20 · Doubling & halving

  7. 7. What is half of 90?

    90 · Doubling & halving

  8. 8. What is half of 68?

    68 · Doubling & halving

  9. 9. What is half of 82?

    82 · Doubling & halving

  10. 10. What is half of 84?

    84 · Doubling & halving

  11. 11. What is double 15?

    15 · Doubling & halving

  12. 12. What is double 14?

    14 · Doubling & halving
12 questions · Seed 61 · 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 46?

    92

    Double 46 is 46 + 46 = 92.

  2. 2. What is half of 18?

    9

    Half of 18 is 18 ÷ 2 = 9.

  3. 3. What is double 48?

    96

    Double 48 is 48 + 48 = 96.

  4. 4. What is half of 96?

    48

    Half of 96 is 96 ÷ 2 = 48.

  5. 5. What is half of 34?

    17

    Half of 34 is 34 ÷ 2 = 17.

  6. 6. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  7. 7. What is half of 90?

    45

    Half of 90 is 90 ÷ 2 = 45.

  8. 8. What is half of 68?

    34

    Half of 68 is 68 ÷ 2 = 34.

  9. 9. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  10. 10. What is half of 84?

    42

    Half of 84 is 84 ÷ 2 = 42.

  11. 11. What is double 15?

    30

    Double 15 is 15 + 15 = 30.

  12. 12. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

12 questions · Seed 61 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 46?

    46 · Doubling & halving

  2. 2. What is half of 18?

    18 · Doubling & halving

  3. 3. What is double 48?

    48 · Doubling & halving

  4. 4. What is half of 96?

    96 · Doubling & halving

  5. 5. What is half of 34?

    34 · Doubling & halving

  6. 6. What is double 20?

    20 · Doubling & halving

  7. 7. What is half of 90?

    90 · Doubling & halving

  8. 8. What is half of 68?

    68 · Doubling & halving

  9. 9. What is half of 82?

    82 · Doubling & halving

  10. 10. What is half of 84?

    84 · Doubling & halving

  11. 11. What is double 15?

    15 · Doubling & halving

  12. 12. What is double 14?

    14 · Doubling & halving
12 questions · Seed 61 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 46?

    92

    Double 46 is 46 + 46 = 92.

  2. 2. What is half of 18?

    9

    Half of 18 is 18 ÷ 2 = 9.

  3. 3. What is double 48?

    96

    Double 48 is 48 + 48 = 96.

  4. 4. What is half of 96?

    48

    Half of 96 is 96 ÷ 2 = 48.

  5. 5. What is half of 34?

    17

    Half of 34 is 34 ÷ 2 = 17.

  6. 6. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  7. 7. What is half of 90?

    45

    Half of 90 is 90 ÷ 2 = 45.

  8. 8. What is half of 68?

    34

    Half of 68 is 68 ÷ 2 = 34.

  9. 9. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  10. 10. What is half of 84?

    42

    Half of 84 is 84 ÷ 2 = 42.

  11. 11. What is double 15?

    30

    Double 15 is 15 + 15 = 30.

  12. 12. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

12 questions · Seed 61 · Age guidance, not curriculum certification