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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 861 · 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. 1.20.31 ÷ 100 =
  2. 2.264.1 ÷ 10 =
  3. 3.46.55 × 10 =
  4. 4.295.3 ÷ 10 =
  5. 5.19.88 × 1000 =
  6. 6.17.22 ÷ 100 =
  7. 7.10.75 ÷ 1000 =
  8. 8.12.27 × 10 =
  9. 9.6.02 × 1000 =
  10. 10.296.6 × 1000 =
  11. 11.22.12 ÷ 100 =
  12. 12.213.5 × 10 =
  13. 13.205.3 ÷ 1000 =
  14. 14.20.53 ÷ 10 =
  15. 15.65.2 ÷ 10 =
  16. 16.10.16 × 1000 =
  17. 17.136.9 × 10 =
  18. 18.8.15 ÷ 1000 =
  19. 19.8.47 ÷ 100 =
  20. 20.30.59 ÷ 10 =
  21. 21.37.3 × 100 =
  22. 22.47.22 × 100 =
  23. 23.297.5 × 100 =
  24. 24.53.5 ÷ 100 =
  25. 25.6.39 × 100 =
  26. 26.126.1 ÷ 10 =
  27. 27.47.86 ÷ 1000 =
  28. 28.42.25 ÷ 100 =
  29. 29.381.8 ÷ 100 =
  30. 30.41.98 ÷ 1000 =
  31. 31.40.89 ÷ 10 =
  32. 32.177.9 × 10 =
  33. 33.126.5 × 100 =
  34. 34.363.4 ÷ 100 =
  35. 35.268.1 × 10 =
  36. 36.41.68 × 10 =
  37. 37.14.5 × 100 =
  38. 38.14.54 × 1000 =
  39. 39.242.5 × 100 =
  40. 40.17.3 × 100 =

Answer key

  1. 0.2031
  2. 26.41
  3. 465.5
  4. 29.53
  5. 19880
  6. 0.1722
  7. 0.01075
  8. 122.7
  9. 6020
  10. 296600
  11. 0.2212
  12. 2135
  13. 0.2053
  14. 2.053
  15. 6.52
  16. 10160
  17. 1369
  18. 0.00815
  19. 0.0847
  20. 3.059
  21. 3730
  22. 4722
  23. 29750
  24. 0.535
  25. 639
  26. 12.61
  27. 0.04786
  28. 0.4225
  29. 3.818
  30. 0.04198
  31. 4.089
  32. 1779
  33. 12650
  34. 3.634
  35. 2681
  36. 416.8
  37. 1450
  38. 14540
  39. 24250
  40. 1730

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