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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 9?

    9 · Doubling & halving

  2. 2. What is double 23?

    23 · Doubling & halving

  3. 3. What is half of 28?

    28 · Doubling & halving

  4. 4. What is double 42?

    42 · Doubling & halving

  5. 5. What is double 45?

    45 · Doubling & halving

  6. 6. What is half of 50?

    50 · Doubling & halving

  7. 7. What is half of 62?

    62 · Doubling & halving

  8. 8. What is double 12?

    12 · Doubling & halving

  9. 9. What is half of 60?

    60 · Doubling & halving

  10. 10. What is half of 46?

    46 · Doubling & halving

  11. 11. What is double 44?

    44 · Doubling & halving

  12. 12. What is double 29?

    29 · Doubling & halving
12 questions · Seed 104731 · 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 9?

    18

    Double 9 is 9 + 9 = 18.

  2. 2. What is double 23?

    46

    Double 23 is 23 + 23 = 46.

  3. 3. What is half of 28?

    14

    Half of 28 is 28 ÷ 2 = 14.

  4. 4. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  5. 5. What is double 45?

    90

    Double 45 is 45 + 45 = 90.

  6. 6. What is half of 50?

    25

    Half of 50 is 50 ÷ 2 = 25.

  7. 7. What is half of 62?

    31

    Half of 62 is 62 ÷ 2 = 31.

  8. 8. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  9. 9. What is half of 60?

    30

    Half of 60 is 60 ÷ 2 = 30.

  10. 10. What is half of 46?

    23

    Half of 46 is 46 ÷ 2 = 23.

  11. 11. What is double 44?

    88

    Double 44 is 44 + 44 = 88.

  12. 12. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

12 questions · Seed 104731 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is double 9?

    9 · Doubling & halving

  2. 2. What is double 23?

    23 · Doubling & halving

  3. 3. What is half of 28?

    28 · Doubling & halving

  4. 4. What is double 42?

    42 · Doubling & halving

  5. 5. What is double 45?

    45 · Doubling & halving

  6. 6. What is half of 50?

    50 · Doubling & halving

  7. 7. What is half of 62?

    62 · Doubling & halving

  8. 8. What is double 12?

    12 · Doubling & halving

  9. 9. What is half of 60?

    60 · Doubling & halving

  10. 10. What is half of 46?

    46 · Doubling & halving

  11. 11. What is double 44?

    44 · Doubling & halving

  12. 12. What is double 29?

    29 · Doubling & halving
12 questions · Seed 104731 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is double 9?

    18

    Double 9 is 9 + 9 = 18.

  2. 2. What is double 23?

    46

    Double 23 is 23 + 23 = 46.

  3. 3. What is half of 28?

    14

    Half of 28 is 28 ÷ 2 = 14.

  4. 4. What is double 42?

    84

    Double 42 is 42 + 42 = 84.

  5. 5. What is double 45?

    90

    Double 45 is 45 + 45 = 90.

  6. 6. What is half of 50?

    25

    Half of 50 is 50 ÷ 2 = 25.

  7. 7. What is half of 62?

    31

    Half of 62 is 62 ÷ 2 = 31.

  8. 8. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  9. 9. What is half of 60?

    30

    Half of 60 is 60 ÷ 2 = 30.

  10. 10. What is half of 46?

    23

    Half of 46 is 46 ÷ 2 = 23.

  11. 11. What is double 44?

    88

    Double 44 is 44 + 44 = 88.

  12. 12. What is double 29?

    58

    Double 29 is 29 + 29 = 58.

12 questions · Seed 104731 · Age guidance, not curriculum certification