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MathsAges 4-6

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 4-6

One more & one less

Take your time. Show your thinking.

  1. 1. What number is 1 less than 19?

    1 · 19 · One more & one less

  2. 2. What number is 1 less than 15?

    1 · 15 · One more & one less

  3. 3. What number is 1 less than 20?

    1 · 20 · One more & one less

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

    1 · 8 · One more & one less

  5. 5. What number is 1 more than 5?

    1 m · 5 · One more & one less

  6. 6. What number is 1 more than 18?

    1 m · 18 · One more & one less

  7. 7. What number is 1 less than 12?

    1 · 12 · One more & one less

  8. 8. What number is 1 more than 19?

    1 m · 19 · One more & one less

  9. 9. What number is 1 less than 18?

    1 · 18 · One more & one less

  10. 10. What number is 1 more than 15?

    1 m · 15 · One more & one less

  11. 11. What number is 1 more than 13?

    1 m · 13 · One more & one less

  12. 12. What number is 1 more than 2?

    1 m · 2 · One more & one less
12 questions · Seed 44 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 4-6

One more & one less

Answers and reasoning. Review before teaching.

  1. 1. What number is 1 less than 19?

    18

    1 less than 19 is 19 − 1 = 18.

  2. 2. What number is 1 less than 15?

    14

    1 less than 15 is 15 − 1 = 14.

  3. 3. What number is 1 less than 20?

    19

    1 less than 20 is 20 − 1 = 19.

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

    7

    1 less than 8 is 8 − 1 = 7.

  5. 5. What number is 1 more than 5?

    6

    1 more than 5 is 5 + 1 = 6.

  6. 6. What number is 1 more than 18?

    19

    1 more than 18 is 18 + 1 = 19.

  7. 7. What number is 1 less than 12?

    11

    1 less than 12 is 12 − 1 = 11.

  8. 8. What number is 1 more than 19?

    20

    1 more than 19 is 19 + 1 = 20.

  9. 9. What number is 1 less than 18?

    17

    1 less than 18 is 18 − 1 = 17.

  10. 10. What number is 1 more than 15?

    16

    1 more than 15 is 15 + 1 = 16.

  11. 11. What number is 1 more than 13?

    14

    1 more than 13 is 13 + 1 = 14.

  12. 12. What number is 1 more than 2?

    3

    1 more than 2 is 2 + 1 = 3.

12 questions · Seed 44 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 4-6

One more & one less

Take your time. Show your thinking.

  1. 1. What number is 1 less than 19?

    1 · 19 · One more & one less

  2. 2. What number is 1 less than 15?

    1 · 15 · One more & one less

  3. 3. What number is 1 less than 20?

    1 · 20 · One more & one less

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

    1 · 8 · One more & one less

  5. 5. What number is 1 more than 5?

    1 m · 5 · One more & one less

  6. 6. What number is 1 more than 18?

    1 m · 18 · One more & one less

  7. 7. What number is 1 less than 12?

    1 · 12 · One more & one less

  8. 8. What number is 1 more than 19?

    1 m · 19 · One more & one less

  9. 9. What number is 1 less than 18?

    1 · 18 · One more & one less

  10. 10. What number is 1 more than 15?

    1 m · 15 · One more & one less

  11. 11. What number is 1 more than 13?

    1 m · 13 · One more & one less

  12. 12. What number is 1 more than 2?

    1 m · 2 · One more & one less
12 questions · Seed 44 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 4-6

One more & one less

Answers and reasoning. Review before teaching.

  1. 1. What number is 1 less than 19?

    18

    1 less than 19 is 19 − 1 = 18.

  2. 2. What number is 1 less than 15?

    14

    1 less than 15 is 15 − 1 = 14.

  3. 3. What number is 1 less than 20?

    19

    1 less than 20 is 20 − 1 = 19.

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

    7

    1 less than 8 is 8 − 1 = 7.

  5. 5. What number is 1 more than 5?

    6

    1 more than 5 is 5 + 1 = 6.

  6. 6. What number is 1 more than 18?

    19

    1 more than 18 is 18 + 1 = 19.

  7. 7. What number is 1 less than 12?

    11

    1 less than 12 is 12 − 1 = 11.

  8. 8. What number is 1 more than 19?

    20

    1 more than 19 is 19 + 1 = 20.

  9. 9. What number is 1 less than 18?

    17

    1 less than 18 is 18 − 1 = 17.

  10. 10. What number is 1 more than 15?

    16

    1 more than 15 is 15 + 1 = 16.

  11. 11. What number is 1 more than 13?

    14

    1 more than 13 is 13 + 1 = 14.

  12. 12. What number is 1 more than 2?

    3

    1 more than 2 is 2 + 1 = 3.

12 questions · Seed 44 · Age guidance, not curriculum certification