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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 836 · 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. 1.336.2 × 10 =
  2. 2.65.3 ÷ 10 =
  3. 3.248.3 × 100 =
  4. 4.234.8 ÷ 10 =
  5. 5.1.12 × 100 =
  6. 6.47.72 ÷ 100 =
  7. 7.333.1 ÷ 10 =
  8. 8.32.15 ÷ 100 =
  9. 9.477.5 ÷ 100 =
  10. 10.4.51 × 10 =
  11. 11.23.21 × 1000 =
  12. 12.130.1 × 10 =
  13. 13.45.2 × 10 =
  14. 14.10.18 ÷ 100 =
  15. 15.47.08 × 10 =
  16. 16.295.7 × 100 =
  17. 17.95.5 ÷ 10 =
  18. 18.0.25 × 10 =
  19. 19.404.4 × 10 =
  20. 20.497.4 ÷ 100 =
  21. 21.1.04 × 10 =
  22. 22.450.3 × 10 =
  23. 23.128.5 ÷ 1000 =
  24. 24.83.3 × 100 =
  25. 25.47.01 ÷ 1000 =
  26. 26.307.8 ÷ 10 =
  27. 27.16.31 × 1000 =
  28. 28.44.1 ÷ 10 =
  29. 29.26.41 × 10 =
  30. 30.13.42 × 10 =
  31. 31.48.93 × 10 =
  32. 32.79.6 ÷ 100 =
  33. 33.33.48 × 1000 =
  34. 34.40.88 ÷ 100 =
  35. 35.29.84 × 10 =
  36. 36.116.1 ÷ 10 =
  37. 37.66.4 ÷ 1000 =
  38. 38.38.59 ÷ 10 =
  39. 39.459.8 × 1000 =
  40. 40.290.5 ÷ 1000 =

Answer key

  1. 3362
  2. 6.53
  3. 24830
  4. 23.48
  5. 112
  6. 0.4772
  7. 33.31
  8. 0.3215
  9. 4.775
  10. 45.1
  11. 23210
  12. 1301
  13. 452
  14. 0.1018
  15. 470.8
  16. 29570
  17. 9.55
  18. 2.5
  19. 4044
  20. 4.974
  21. 10.4
  22. 4503
  23. 0.1285
  24. 8330
  25. 0.04701
  26. 30.78
  27. 16310
  28. 4.41
  29. 264.1
  30. 134.2
  31. 489.3
  32. 0.796
  33. 33480
  34. 0.4088
  35. 298.4
  36. 11.61
  37. 0.0664
  38. 3.859
  39. 459800
  40. 0.2905

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