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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 42?

    42 · Doubling & halving

  2. 2. What is half of 32?

    32 · Doubling & halving

  3. 3. What is double 41?

    41 · Doubling & halving

  4. 4. What is half of 96?

    96 · Doubling & halving

  5. 5. What is half of 22?

    22 · Doubling & halving

  6. 6. What is half of 42?

    42 · Doubling & halving

  7. 7. What is double 30?

    30 · Doubling & halving

  8. 8. What is half of 72?

    72 · Doubling & halving

  9. 9. What is double 25?

    25 · Doubling & halving

  10. 10. What is half of 80?

    80 · Doubling & halving

  11. 11. What is double 8?

    8 · Doubling & halving

  12. 12. What is double 29?

    29 · Doubling & halving
12 questions · Seed 59 · 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 42?

    84

    Double 42 is 42 + 42 = 84.

  2. 2. What is half of 32?

    16

    Half of 32 is 32 ÷ 2 = 16.

  3. 3. What is double 41?

    82

    Double 41 is 41 + 41 = 82.

  4. 4. What is half of 96?

    48

    Half of 96 is 96 ÷ 2 = 48.

  5. 5. What is half of 22?

    11

    Half of 22 is 22 ÷ 2 = 11.

  6. 6. What is half of 42?

    21

    Half of 42 is 42 ÷ 2 = 21.

  7. 7. What is double 30?

    60

    Double 30 is 30 + 30 = 60.

  8. 8. What is half of 72?

    36

    Half of 72 is 72 ÷ 2 = 36.

  9. 9. What is double 25?

    50

    Double 25 is 25 + 25 = 50.

  10. 10. What is half of 80?

    40

    Half of 80 is 80 ÷ 2 = 40.

  11. 11. What is double 8?

    16

    Double 8 is 8 + 8 = 16.

  12. 12. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

12 questions · Seed 59 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 42?

    42 · Doubling & halving

  2. 2. What is half of 32?

    32 · Doubling & halving

  3. 3. What is double 41?

    41 · Doubling & halving

  4. 4. What is half of 96?

    96 · Doubling & halving

  5. 5. What is half of 22?

    22 · Doubling & halving

  6. 6. What is half of 42?

    42 · Doubling & halving

  7. 7. What is double 30?

    30 · Doubling & halving

  8. 8. What is half of 72?

    72 · Doubling & halving

  9. 9. What is double 25?

    25 · Doubling & halving

  10. 10. What is half of 80?

    80 · Doubling & halving

  11. 11. What is double 8?

    8 · Doubling & halving

  12. 12. What is double 29?

    29 · Doubling & halving
12 questions · Seed 59 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  2. 2. What is half of 32?

    16

    Half of 32 is 32 ÷ 2 = 16.

  3. 3. What is double 41?

    82

    Double 41 is 41 + 41 = 82.

  4. 4. What is half of 96?

    48

    Half of 96 is 96 ÷ 2 = 48.

  5. 5. What is half of 22?

    11

    Half of 22 is 22 ÷ 2 = 11.

  6. 6. What is half of 42?

    21

    Half of 42 is 42 ÷ 2 = 21.

  7. 7. What is double 30?

    60

    Double 30 is 30 + 30 = 60.

  8. 8. What is half of 72?

    36

    Half of 72 is 72 ÷ 2 = 36.

  9. 9. What is double 25?

    50

    Double 25 is 25 + 25 = 50.

  10. 10. What is half of 80?

    40

    Half of 80 is 80 ÷ 2 = 40.

  11. 11. What is double 8?

    16

    Double 8 is 8 + 8 = 16.

  12. 12. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

12 questions · Seed 59 · Age guidance, not curriculum certification