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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 30?

    30 · Doubling & halving

  2. 2. What is half of 30?

    30 · Doubling & halving

  3. 3. What is half of 74?

    74 · Doubling & halving

  4. 4. What is double 48?

    48 · Doubling & halving

  5. 5. What is double 33?

    33 · Doubling & halving

  6. 6. What is double 42?

    42 · Doubling & halving

  7. 7. What is double 29?

    29 · Doubling & halving

  8. 8. What is double 43?

    43 · Doubling & halving

  9. 9. What is double 28?

    28 · Doubling & halving

  10. 10. What is half of 34?

    34 · Doubling & halving

  11. 11. What is half of 56?

    56 · Doubling & halving

  12. 12. What is half of 24?

    24 · Doubling & halving
12 questions · Seed 104737 · 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 30?

    60

    Double 30 is 30 + 30 = 60.

  2. 2. What is half of 30?

    15

    Half of 30 is 30 ÷ 2 = 15.

  3. 3. What is half of 74?

    37

    Half of 74 is 74 ÷ 2 = 37.

  4. 4. What is double 48?

    96

    Double 48 is 48 + 48 = 96.

  5. 5. What is double 33?

    66

    Double 33 is 33 + 33 = 66.

  6. 6. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  7. 7. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

  8. 8. What is double 43?

    86

    Double 43 is 43 + 43 = 86.

  9. 9. What is double 28?

    56

    Double 28 is 28 + 28 = 56.

  10. 10. What is half of 34?

    17

    Half of 34 is 34 ÷ 2 = 17.

  11. 11. What is half of 56?

    28

    Half of 56 is 56 ÷ 2 = 28.

  12. 12. What is half of 24?

    12

    Half of 24 is 24 ÷ 2 = 12.

12 questions · Seed 104737 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 30?

    30 · Doubling & halving

  2. 2. What is half of 30?

    30 · Doubling & halving

  3. 3. What is half of 74?

    74 · Doubling & halving

  4. 4. What is double 48?

    48 · Doubling & halving

  5. 5. What is double 33?

    33 · Doubling & halving

  6. 6. What is double 42?

    42 · Doubling & halving

  7. 7. What is double 29?

    29 · Doubling & halving

  8. 8. What is double 43?

    43 · Doubling & halving

  9. 9. What is double 28?

    28 · Doubling & halving

  10. 10. What is half of 34?

    34 · Doubling & halving

  11. 11. What is half of 56?

    56 · Doubling & halving

  12. 12. What is half of 24?

    24 · Doubling & halving
12 questions · Seed 104737 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 30?

    60

    Double 30 is 30 + 30 = 60.

  2. 2. What is half of 30?

    15

    Half of 30 is 30 ÷ 2 = 15.

  3. 3. What is half of 74?

    37

    Half of 74 is 74 ÷ 2 = 37.

  4. 4. What is double 48?

    96

    Double 48 is 48 + 48 = 96.

  5. 5. What is double 33?

    66

    Double 33 is 33 + 33 = 66.

  6. 6. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  7. 7. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

  8. 8. What is double 43?

    86

    Double 43 is 43 + 43 = 86.

  9. 9. What is double 28?

    56

    Double 28 is 28 + 28 = 56.

  10. 10. What is half of 34?

    17

    Half of 34 is 34 ÷ 2 = 17.

  11. 11. What is half of 56?

    28

    Half of 56 is 56 ÷ 2 = 28.

  12. 12. What is half of 24?

    12

    Half of 24 is 24 ÷ 2 = 12.

12 questions · Seed 104737 · Age guidance, not curriculum certification