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Convert centimeters and millimeters

Grade 3 math · Fieldbook Learning

Name ______________________ Date __________

1 cm = 10 mm. Smaller units make a bigger count; bigger units make a smaller count.

  1. 1 cm = ___ mm
  2. 30 mm = ___ cm
  3. 20 mm = ___ cm
  4. 2 cm = ___ mm
  5. 6 cm = ___ mm
  6. 60 mm = ___ cm
  7. 40 mm = ___ cm
  8. 5 cm = ___ mm
  9. 100 mm = ___ cm
  10. 10 mm = ___ cm
  11. 10 cm = ___ mm
  12. 7 cm = ___ mm
  13. 130 mm = ___ cm
  14. 12 cm = ___ mm
  15. 4 cm = ___ mm
  16. 150 mm = ___ cm
  17. 50 mm = ___ cm
  18. 3 cm = ___ mm
  19. 80 mm = ___ cm
  20. 190 mm = ___ cm
More free practice: fieldbooklearning.com/practice/grade-3/convert-centimeters-and-millimeters/

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20 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

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  2. Click the matching button below, then click the first empty question row of the template and paste.
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Answer key: Convert centimeters and millimeters

  1. 10 mm
  2. 3 cm
  3. 2 cm
  4. 20 mm
  5. 60 mm
  6. 6 cm
  7. 4 cm
  8. 50 mm
  9. 10 cm
  10. 1 cm
  11. 100 mm
  12. 70 mm
  13. 13 cm
  14. 120 mm
  15. 40 mm
  16. 15 cm
  17. 5 cm
  18. 30 mm
  19. 8 cm
  20. 19 cm