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MathsAges 7-9

One more & one less

Find the number that is 1, 2 or 10 more or less than a given whole number. 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

One more & one less

Take your time. Show your thinking.

  1. 1. What number is 1 less than 78?

    1 · 78 · One more & one less

  2. 2. What number is 1 less than 39?

    1 · 39 · One more & one less

  3. 3. What number is 1 more than 70?

    1 m · 70 · One more & one less

  4. 4. What number is 1 more than 44?

    1 m · 44 · One more & one less

  5. 5. What number is 1 less than 81?

    1 · 81 · One more & one less

  6. 6. What number is 1 less than 47?

    1 · 47 · One more & one less

  7. 7. What number is 1 more than 66?

    1 m · 66 · One more & one less

  8. 8. What number is 1 less than 29?

    1 · 29 · One more & one less

  9. 9. What number is 1 less than 17?

    1 · 17 · One more & one less

  10. 10. What number is 1 less than 33?

    1 · 33 · One more & one less

  11. 11. What number is 1 less than 43?

    1 · 43 · One more & one less

  12. 12. What number is 1 more than 71?

    1 m · 71 · One more & one less
12 questions · Seed 47 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9

One more & one less

Answers and reasoning. Review before teaching.

  1. 1. What number is 1 less than 78?

    77

    1 less than 78 is 78 − 1 = 77.

  2. 2. What number is 1 less than 39?

    38

    1 less than 39 is 39 − 1 = 38.

  3. 3. What number is 1 more than 70?

    71

    1 more than 70 is 70 + 1 = 71.

  4. 4. What number is 1 more than 44?

    45

    1 more than 44 is 44 + 1 = 45.

  5. 5. What number is 1 less than 81?

    80

    1 less than 81 is 81 − 1 = 80.

  6. 6. What number is 1 less than 47?

    46

    1 less than 47 is 47 − 1 = 46.

  7. 7. What number is 1 more than 66?

    67

    1 more than 66 is 66 + 1 = 67.

  8. 8. What number is 1 less than 29?

    28

    1 less than 29 is 29 − 1 = 28.

  9. 9. What number is 1 less than 17?

    16

    1 less than 17 is 17 − 1 = 16.

  10. 10. What number is 1 less than 33?

    32

    1 less than 33 is 33 − 1 = 32.

  11. 11. What number is 1 less than 43?

    42

    1 less than 43 is 43 − 1 = 42.

  12. 12. What number is 1 more than 71?

    72

    1 more than 71 is 71 + 1 = 72.

12 questions · Seed 47 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

One more & one less

Take your time. Show your thinking.

  1. 1. What number is 1 less than 78?

    1 · 78 · One more & one less

  2. 2. What number is 1 less than 39?

    1 · 39 · One more & one less

  3. 3. What number is 1 more than 70?

    1 m · 70 · One more & one less

  4. 4. What number is 1 more than 44?

    1 m · 44 · One more & one less

  5. 5. What number is 1 less than 81?

    1 · 81 · One more & one less

  6. 6. What number is 1 less than 47?

    1 · 47 · One more & one less

  7. 7. What number is 1 more than 66?

    1 m · 66 · One more & one less

  8. 8. What number is 1 less than 29?

    1 · 29 · One more & one less

  9. 9. What number is 1 less than 17?

    1 · 17 · One more & one less

  10. 10. What number is 1 less than 33?

    1 · 33 · One more & one less

  11. 11. What number is 1 less than 43?

    1 · 43 · One more & one less

  12. 12. What number is 1 more than 71?

    1 m · 71 · One more & one less
12 questions · Seed 47 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

One more & one less

Answers and reasoning. Review before teaching.

  1. 1. What number is 1 less than 78?

    77

    1 less than 78 is 78 − 1 = 77.

  2. 2. What number is 1 less than 39?

    38

    1 less than 39 is 39 − 1 = 38.

  3. 3. What number is 1 more than 70?

    71

    1 more than 70 is 70 + 1 = 71.

  4. 4. What number is 1 more than 44?

    45

    1 more than 44 is 44 + 1 = 45.

  5. 5. What number is 1 less than 81?

    80

    1 less than 81 is 81 − 1 = 80.

  6. 6. What number is 1 less than 47?

    46

    1 less than 47 is 47 − 1 = 46.

  7. 7. What number is 1 more than 66?

    67

    1 more than 66 is 66 + 1 = 67.

  8. 8. What number is 1 less than 29?

    28

    1 less than 29 is 29 − 1 = 28.

  9. 9. What number is 1 less than 17?

    16

    1 less than 17 is 17 − 1 = 16.

  10. 10. What number is 1 less than 33?

    32

    1 less than 33 is 33 − 1 = 32.

  11. 11. What number is 1 less than 43?

    42

    1 less than 43 is 43 − 1 = 42.

  12. 12. What number is 1 more than 71?

    72

    1 more than 71 is 71 + 1 = 72.

12 questions · Seed 47 · Age guidance, not curriculum certification