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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 802 · 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. 1.1.89 ÷ 10 =
  2. 2.11.89 × 10 =
  3. 3.27.65 × 100 =
  4. 4.16.54 × 10 =
  5. 5.25.16 × 100 =
  6. 6.29.18 × 1000 =
  7. 7.105.1 × 1000 =
  8. 8.15.03 ÷ 100 =
  9. 9.96.4 × 10 =
  10. 10.28.81 × 1000 =
  11. 11.198.7 × 100 =
  12. 12.397.8 × 10 =
  13. 13.4.13 ÷ 1000 =
  14. 14.357.6 ÷ 1000 =
  15. 15.78.2 × 100 =
  16. 16.311.7 × 1000 =
  17. 17.335.2 ÷ 100 =
  18. 18.13.87 ÷ 100 =
  19. 19.42.1 ÷ 100 =
  20. 20.3.3 ÷ 10 =
  21. 21.11.44 ÷ 10 =
  22. 22.44.92 × 1000 =
  23. 23.10.66 ÷ 100 =
  24. 24.167.5 × 1000 =
  25. 25.30.95 × 100 =
  26. 26.27.13 × 1000 =
  27. 27.10.46 ÷ 10 =
  28. 28.329.2 × 10 =
  29. 29.7.42 × 10 =
  30. 30.70.5 ÷ 1000 =
  31. 31.349.3 × 10 =
  32. 32.25.7 ÷ 1000 =
  33. 33.41.01 ÷ 10 =
  34. 34.7.57 ÷ 1000 =
  35. 35.13.35 ÷ 100 =
  36. 36.35.83 × 100 =
  37. 37.11.32 ÷ 10 =
  38. 38.31.1 ÷ 100 =
  39. 39.13.45 ÷ 100 =
  40. 40.38.47 × 100 =

Answer key

  1. 0.189
  2. 118.9
  3. 2765
  4. 165.4
  5. 2516
  6. 29180
  7. 105100
  8. 0.1503
  9. 964
  10. 28810
  11. 19870
  12. 3978
  13. 0.00413
  14. 0.3576
  15. 7820
  16. 311700
  17. 3.352
  18. 0.1387
  19. 0.421
  20. 0.33
  21. 1.144
  22. 44920
  23. 0.1066
  24. 167500
  25. 3095
  26. 27130
  27. 1.046
  28. 3292
  29. 74.2
  30. 0.0705
  31. 3493
  32. 0.0257
  33. 4.101
  34. 0.00757
  35. 0.1335
  36. 3583
  37. 1.132
  38. 0.311
  39. 0.1345
  40. 3847

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