← Back

Opens your browser’s print dialog — choose “Save as PDF” as the destination.

Celeste International School

Grade 1 · Worksheet

Working with numbers

Addition & subtraction

Name: ______________________________Date: ______________Score: ______ / 20
  1. 1.

    6 + 4 = ? (a number bond that makes 10)

  2. 2.

    41 + 6 = ?

  3. 3.

    42 + 10 = ?

  4. 4.

    26 + 30 = ?

  5. 5.

    9 + 6 + 1 = ?

  6. 6.

    68 - 7 = ?

  7. 7.

    85 - 10 = ?

  8. 8.

    Dad buys a bag of 24 red apples and a bag of 10 green apples. To find how many apples he bought, do you add or subtract?

    1. Aadd
    2. Bsubtract
  9. 9.

    A bus has 64 seats. 30 people get on. How many seats are empty?

  10. 10.

    A baker made 32 chocolate cookies and 20 raspberry cookies. How many cookies did he make altogether?

  11. 11.

    Complement of 100: 60 + ? = 100

  12. 12.

    When you work out 42 + 10 = 52, the ones digit stays the same.

    True False
  13. 13.

    Work out each total, then put them in order from the smallest total to the largest.

    Write the order (smallest total first) in the boxes:

    • ?62 + 7
    • ?41 + 6
    • ?42 + 10
  14. 14.

    24 + 10 gives the same answer as 10 + 24.

    True False
  15. 15.

    48 + 2 = ?

  16. 16.

    82 + 10 = ?

  17. 17.

    26 + 20 = ?

  18. 18.

    26 - 20 = ?

  19. 19.

    40 - 12 = ?

  20. 20.

    57 + 5 = ?

Celeste International School

Answer key

Working with numbers — Addition & subtraction

  1. 1.10
  2. 2.47
  3. 3.52
  4. 4.56
  5. 5.16
  6. 6.61
  7. 7.75
  8. 8.A. add
  9. 9.34
  10. 10.52
  11. 11.40
  12. 12.True
  13. 13.41 + 6, 42 + 10, 62 + 7
  14. 14.True
  15. 15.50
  16. 16.92
  17. 17.46
  18. 18.6
  19. 19.28
  20. 20.62