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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 27?

    27 · Doubling & halving

  2. 2. What is double 20?

    20 · Doubling & halving

  3. 3. What is double 40?

    40 · Doubling & halving

  4. 4. What is half of 74?

    74 · Doubling & halving

  5. 5. What is half of 82?

    82 · Doubling & halving

  6. 6. What is half of 76?

    76 · Doubling & halving

  7. 7. What is half of 32?

    32 · Doubling & halving

  8. 8. What is double 35?

    35 · Doubling & halving

  9. 9. What is half of 46?

    46 · Doubling & halving

  10. 10. What is double 9?

    9 · Doubling & halving

  11. 11. What is double 21?

    21 · Doubling & halving

  12. 12. What is half of 14?

    14 · Doubling & halving
12 questions · Seed 51 · 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 27?

    54

    Double 27 is 27 + 27 = 54.

  2. 2. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  3. 3. What is double 40?

    80

    Double 40 is 40 + 40 = 80.

  4. 4. What is half of 74?

    37

    Half of 74 is 74 ÷ 2 = 37.

  5. 5. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  6. 6. What is half of 76?

    38

    Half of 76 is 76 ÷ 2 = 38.

  7. 7. What is half of 32?

    16

    Half of 32 is 32 ÷ 2 = 16.

  8. 8. What is double 35?

    70

    Double 35 is 35 + 35 = 70.

  9. 9. What is half of 46?

    23

    Half of 46 is 46 ÷ 2 = 23.

  10. 10. What is double 9?

    18

    Double 9 is 9 + 9 = 18.

  11. 11. What is double 21?

    42

    Double 21 is 21 + 21 = 42.

  12. 12. What is half of 14?

    7

    Half of 14 is 14 ÷ 2 = 7.

12 questions · Seed 51 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 27?

    27 · Doubling & halving

  2. 2. What is double 20?

    20 · Doubling & halving

  3. 3. What is double 40?

    40 · Doubling & halving

  4. 4. What is half of 74?

    74 · Doubling & halving

  5. 5. What is half of 82?

    82 · Doubling & halving

  6. 6. What is half of 76?

    76 · Doubling & halving

  7. 7. What is half of 32?

    32 · Doubling & halving

  8. 8. What is double 35?

    35 · Doubling & halving

  9. 9. What is half of 46?

    46 · Doubling & halving

  10. 10. What is double 9?

    9 · Doubling & halving

  11. 11. What is double 21?

    21 · Doubling & halving

  12. 12. What is half of 14?

    14 · Doubling & halving
12 questions · Seed 51 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 27?

    54

    Double 27 is 27 + 27 = 54.

  2. 2. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  3. 3. What is double 40?

    80

    Double 40 is 40 + 40 = 80.

  4. 4. What is half of 74?

    37

    Half of 74 is 74 ÷ 2 = 37.

  5. 5. What is half of 82?

    41

    Half of 82 is 82 ÷ 2 = 41.

  6. 6. What is half of 76?

    38

    Half of 76 is 76 ÷ 2 = 38.

  7. 7. What is half of 32?

    16

    Half of 32 is 32 ÷ 2 = 16.

  8. 8. What is double 35?

    70

    Double 35 is 35 + 35 = 70.

  9. 9. What is half of 46?

    23

    Half of 46 is 46 ÷ 2 = 23.

  10. 10. What is double 9?

    18

    Double 9 is 9 + 9 = 18.

  11. 11. What is double 21?

    42

    Double 21 is 21 + 21 = 42.

  12. 12. What is half of 14?

    7

    Half of 14 is 14 ÷ 2 = 7.

12 questions · Seed 51 · Age guidance, not curriculum certification