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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 572 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.17.05 ÷ 100 =
  2. 2.319.8 ÷ 10 =
  3. 3.60.3 × 100 =
  4. 4.11.94 ÷ 1000 =
  5. 5.13.31 ÷ 100 =
  6. 6.398.2 ÷ 1000 =
  7. 7.196.6 × 100 =
  8. 8.37.64 ÷ 10 =
  9. 9.439.1 × 1000 =
  10. 10.103.1 × 100 =
  11. 11.65.7 × 10 =
  12. 12.61.1 × 1000 =
  13. 13.42.51 × 100 =
  14. 14.22.99 ÷ 10 =
  15. 15.36.57 ÷ 10 =
  16. 16.306.1 ÷ 100 =
  17. 17.62.5 × 100 =
  18. 18.465.8 × 100 =
  19. 19.6.6 ÷ 1000 =
  20. 20.192.8 × 1000 =
  21. 21.28.2 ÷ 1000 =
  22. 22.247.5 ÷ 10 =
  23. 23.488.1 ÷ 1000 =
  24. 24.12.62 × 1000 =
  25. 25.443.5 × 100 =
  26. 26.20.84 × 100 =
  27. 27.178.7 ÷ 100 =
  28. 28.266.7 ÷ 10 =
  29. 29.308.6 × 1000 =
  30. 30.30.48 × 10 =
  31. 31.13.16 × 100 =
  32. 32.382.2 ÷ 100 =
  33. 33.16.63 ÷ 10 =
  34. 34.193.1 ÷ 1000 =
  35. 35.83.5 ÷ 100 =
  36. 36.13.36 × 100 =
  37. 37.47.36 ÷ 100 =
  38. 38.20.81 × 10 =
  39. 39.24.82 × 100 =
  40. 40.453.6 ÷ 100 =

Answer key

  1. 0.1705
  2. 31.98
  3. 6030
  4. 0.01194
  5. 0.1331
  6. 0.3982
  7. 19660
  8. 3.764
  9. 439100
  10. 10310
  11. 657
  12. 61100
  13. 4251
  14. 2.299
  15. 3.657
  16. 3.061
  17. 6250
  18. 46580
  19. 0.0066
  20. 192800
  21. 0.0282
  22. 24.75
  23. 0.4881
  24. 12620
  25. 44350
  26. 2084
  27. 1.787
  28. 26.67
  29. 308600
  30. 304.8
  31. 1316
  32. 3.822
  33. 1.663
  34. 0.1931
  35. 0.835
  36. 1336
  37. 0.4736
  38. 208.1
  39. 2482
  40. 4.536

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