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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 29?

    29 · Doubling & halving

  2. 2. What is double 17?

    17 · Doubling & halving

  3. 3. What is double 14?

    14 · Doubling & halving

  4. 4. What is half of 82?

    82 · Doubling & halving

  5. 5. What is double 16?

    16 · Doubling & halving

  6. 6. What is half of 16?

    16 · Doubling & halving

  7. 7. What is double 46?

    46 · Doubling & halving

  8. 8. What is half of 66?

    66 · Doubling & halving

  9. 9. What is double 19?

    19 · Doubling & halving

  10. 10. What is half of 72?

    72 · Doubling & halving

  11. 11. What is half of 60?

    60 · Doubling & halving

  12. 12. What is double 34?

    34 · Doubling & halving
12 questions · Seed 56 · 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 29?

    58

    Double 29 is 29 + 29 = 58.

  2. 2. What is double 17?

    34

    Double 17 is 17 + 17 = 34.

  3. 3. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

  4. 4. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  5. 5. What is double 16?

    32

    Double 16 is 16 + 16 = 32.

  6. 6. What is half of 16?

    8

    Half of 16 is 16 ÷ 2 = 8.

  7. 7. What is double 46?

    92

    Double 46 is 46 + 46 = 92.

  8. 8. What is half of 66?

    33

    Half of 66 is 66 ÷ 2 = 33.

  9. 9. What is double 19?

    38

    Double 19 is 19 + 19 = 38.

  10. 10. What is half of 72?

    36

    Half of 72 is 72 ÷ 2 = 36.

  11. 11. What is half of 60?

    30

    Half of 60 is 60 ÷ 2 = 30.

  12. 12. What is double 34?

    68

    Double 34 is 34 + 34 = 68.

12 questions · Seed 56 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 29?

    29 · Doubling & halving

  2. 2. What is double 17?

    17 · Doubling & halving

  3. 3. What is double 14?

    14 · Doubling & halving

  4. 4. What is half of 82?

    82 · Doubling & halving

  5. 5. What is double 16?

    16 · Doubling & halving

  6. 6. What is half of 16?

    16 · Doubling & halving

  7. 7. What is double 46?

    46 · Doubling & halving

  8. 8. What is half of 66?

    66 · Doubling & halving

  9. 9. What is double 19?

    19 · Doubling & halving

  10. 10. What is half of 72?

    72 · Doubling & halving

  11. 11. What is half of 60?

    60 · Doubling & halving

  12. 12. What is double 34?

    34 · Doubling & halving
12 questions · Seed 56 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

  2. 2. What is double 17?

    34

    Double 17 is 17 + 17 = 34.

  3. 3. What is double 14?

    28

    Double 14 is 14 + 14 = 28.

  4. 4. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  5. 5. What is double 16?

    32

    Double 16 is 16 + 16 = 32.

  6. 6. What is half of 16?

    8

    Half of 16 is 16 ÷ 2 = 8.

  7. 7. What is double 46?

    92

    Double 46 is 46 + 46 = 92.

  8. 8. What is half of 66?

    33

    Half of 66 is 66 ÷ 2 = 33.

  9. 9. What is double 19?

    38

    Double 19 is 19 + 19 = 38.

  10. 10. What is half of 72?

    36

    Half of 72 is 72 ÷ 2 = 36.

  11. 11. What is half of 60?

    30

    Half of 60 is 60 ÷ 2 = 30.

  12. 12. What is double 34?

    68

    Double 34 is 34 + 34 = 68.

12 questions · Seed 56 · Age guidance, not curriculum certification