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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 28 · 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. 1.41.73 ÷ 1000 =
  2. 2.385.1 ÷ 10 =
  3. 3.18.55 × 10 =
  4. 4.497.1 × 10 =
  5. 5.410.3 ÷ 1000 =
  6. 6.449.5 ÷ 10 =
  7. 7.368.6 ÷ 1000 =
  8. 8.8.23 × 100 =
  9. 9.21.53 ÷ 10 =
  10. 10.173.1 × 1000 =
  11. 11.3.43 × 100 =
  12. 12.25.17 ÷ 1000 =
  13. 13.74.8 ÷ 10 =
  14. 14.4.59 × 1000 =
  15. 15.26.77 ÷ 100 =
  16. 16.25.34 × 100 =
  17. 17.46.81 × 1000 =
  18. 18.34.6 × 1000 =
  19. 19.145.8 ÷ 10 =
  20. 20.48.74 ÷ 10 =
  21. 21.33.03 × 10 =
  22. 22.42.77 ÷ 1000 =
  23. 23.33.82 ÷ 10 =
  24. 24.430.9 × 10 =
  25. 25.9.3 × 10 =
  26. 26.49.14 × 10 =
  27. 27.32.83 × 10 =
  28. 28.335.3 ÷ 100 =
  29. 29.37.55 ÷ 100 =
  30. 30.50.5 × 100 =
  31. 31.78.1 × 100 =
  32. 32.5.08 × 1000 =
  33. 33.252.8 × 1000 =
  34. 34.474.2 ÷ 1000 =
  35. 35.387.7 ÷ 10 =
  36. 36.369.4 ÷ 100 =
  37. 37.18.15 × 1000 =
  38. 38.474.1 ÷ 10 =
  39. 39.195.7 ÷ 10 =
  40. 40.15.61 × 100 =

Answer key

  1. 0.04173
  2. 38.51
  3. 185.5
  4. 4971
  5. 0.4103
  6. 44.95
  7. 0.3686
  8. 823
  9. 2.153
  10. 173100
  11. 343
  12. 0.02517
  13. 7.48
  14. 4590
  15. 0.2677
  16. 2534
  17. 46810
  18. 34600
  19. 14.58
  20. 4.874
  21. 330.3
  22. 0.04277
  23. 3.382
  24. 4309
  25. 93
  26. 491.4
  27. 328.3
  28. 3.353
  29. 0.3755
  30. 5050
  31. 7810
  32. 5080
  33. 252800
  34. 0.4742
  35. 38.77
  36. 3.694
  37. 18150
  38. 47.41
  39. 19.57
  40. 1561

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