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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 297 · 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. 1.7.73 × 1000 =
  2. 2.7.25 × 10 =
  3. 3.1.1 × 100 =
  4. 4.33.44 ÷ 100 =
  5. 5.247.1 ÷ 1000 =
  6. 6.339.9 × 10 =
  7. 7.15.49 × 1000 =
  8. 8.125.1 ÷ 10 =
  9. 9.483.6 ÷ 10 =
  10. 10.321.3 × 1000 =
  11. 11.55.7 × 10 =
  12. 12.138.6 ÷ 1000 =
  13. 13.26.78 × 1000 =
  14. 14.431.9 ÷ 1000 =
  15. 15.35.06 ÷ 100 =
  16. 16.137.9 × 100 =
  17. 17.316.6 × 10 =
  18. 18.23.94 ÷ 100 =
  19. 19.32.09 ÷ 1000 =
  20. 20.271.7 × 10 =
  21. 21.38.01 ÷ 1000 =
  22. 22.48.23 ÷ 10 =
  23. 23.14.15 ÷ 1000 =
  24. 24.24.81 × 100 =
  25. 25.23.85 × 1000 =
  26. 26.323.8 ÷ 1000 =
  27. 27.355.1 × 100 =
  28. 28.40.17 ÷ 1000 =
  29. 29.11.94 × 1000 =
  30. 30.263.8 × 1000 =
  31. 31.8.58 × 100 =
  32. 32.182.5 × 10 =
  33. 33.119.3 ÷ 10 =
  34. 34.191.2 ÷ 10 =
  35. 35.12.79 ÷ 10 =
  36. 36.42.06 ÷ 10 =
  37. 37.42.9 × 1000 =
  38. 38.49.68 × 1000 =
  39. 39.285.6 × 1000 =
  40. 40.36.29 ÷ 100 =

Answer key

  1. 7730
  2. 72.5
  3. 110
  4. 0.3344
  5. 0.2471
  6. 3399
  7. 15490
  8. 12.51
  9. 48.36
  10. 321300
  11. 557
  12. 0.1386
  13. 26780
  14. 0.4319
  15. 0.3506
  16. 13790
  17. 3166
  18. 0.2394
  19. 0.03209
  20. 2717
  21. 0.03801
  22. 4.823
  23. 0.01415
  24. 2481
  25. 23850
  26. 0.3238
  27. 35510
  28. 0.04017
  29. 11940
  30. 263800
  31. 858
  32. 1825
  33. 11.93
  34. 19.12
  35. 1.279
  36. 4.206
  37. 42900
  38. 49680
  39. 285600
  40. 0.3629

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