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Celeste International School

Grade 1 · Worksheet

Numbers to 100

Counting objects

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

    To count a big pile of objects quickly, it helps to count in...

    1. Aones
    2. Btens
    3. Chundreds
  2. 2.

    What tens number comes after 60?

  3. 3.

    Which tens number is missing? 10, 20, 30, 40, __, 60

  4. 4.

    Put these tens numbers in order.

    Write the order (smallest to largest) in the boxes:

    • ?30
    • ?10
    • ?20
  5. 5.

    Count in tens: 10, 20, 30, __

  6. 6.

    There are 4 groups of 10 and 5 ones. How many altogether?

  7. 7.

    There are 6 groups of 10. How many altogether?

  8. 8.

    How many tens and ones make 84?

    1. A8 tens and 4 ones
    2. B4 tens and 8 ones
    3. C8 tens and 0 ones
  9. 9.

    How many tens are in 66?

  10. 10.

    How many ones are in 66?

  11. 11.

    Count in twos: 2, 4, 6, __

  12. 12.

    Count in twos: 20, 22, 24, __

  13. 13.

    Marcus counts from 0 in twos. Which number does he NOT say?

    1. A24
    2. B37
    3. C42
  14. 14.

    When you count in twos from 0, you say 15.

    True False
  15. 15.

    Counting in tens helps you count a large pile quickly.

    True False
  16. 16.

    Count in fives: 5, 10, 15, __

  17. 17.

    Count in fives: 25, 30, 35, __

  18. 18.

    Before you count a pile of objects, it is a good idea to first...

    1. Astop
    2. Bhide it
    3. Cestimate
  19. 19.

    3 groups of 10 and 6 ones make what number?

  20. 20.

    An estimate is a good guess you make before you count.

    True False
Celeste International School

Answer key

Numbers to 100 — Counting objects

  1. 1.B. tens
  2. 2.70
  3. 3.50
  4. 4.10, 20, 30
  5. 5.40
  6. 6.45
  7. 7.60
  8. 8.A. 8 tens and 4 ones
  9. 9.6
  10. 10.6
  11. 11.8
  12. 12.26
  13. 13.B. 37
  14. 14.False
  15. 15.True
  16. 16.20
  17. 17.40
  18. 18.C. estimate
  19. 19.36
  20. 20.True