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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 863 · 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. 1.41.51 × 100 =
  2. 2.165.6 ÷ 100 =
  3. 3.89.8 × 1000 =
  4. 4.35.4 ÷ 100 =
  5. 5.340.2 × 100 =
  6. 6.6.96 × 100 =
  7. 7.35.15 ÷ 100 =
  8. 8.21.26 ÷ 10 =
  9. 9.276.1 ÷ 10 =
  10. 10.256.9 × 100 =
  11. 11.120.7 × 100 =
  12. 12.154.8 × 100 =
  13. 13.27.04 × 10 =
  14. 14.34.52 × 1000 =
  15. 15.22.19 × 1000 =
  16. 16.346.2 × 100 =
  17. 17.12.79 ÷ 1000 =
  18. 18.357.8 × 10 =
  19. 19.70.9 × 100 =
  20. 20.91.2 × 100 =
  21. 21.206.1 × 100 =
  22. 22.21.81 × 1000 =
  23. 23.49.5 ÷ 100 =
  24. 24.242.4 × 100 =
  25. 25.38.71 × 10 =
  26. 26.324.8 ÷ 1000 =
  27. 27.330.1 ÷ 100 =
  28. 28.16.73 × 1000 =
  29. 29.9.92 × 100 =
  30. 30.167.8 × 1000 =
  31. 31.360.1 × 1000 =
  32. 32.12.41 ÷ 100 =
  33. 33.5.31 ÷ 1000 =
  34. 34.18.05 × 1000 =
  35. 35.301.4 × 10 =
  36. 36.15.14 ÷ 100 =
  37. 37.474.1 ÷ 10 =
  38. 38.107.3 × 1000 =
  39. 39.128.1 × 1000 =
  40. 40.54.6 × 100 =

Answer key

  1. 4151
  2. 1.656
  3. 89800
  4. 0.354
  5. 34020
  6. 696
  7. 0.3515
  8. 2.126
  9. 27.61
  10. 25690
  11. 12070
  12. 15480
  13. 270.4
  14. 34520
  15. 22190
  16. 34620
  17. 0.01279
  18. 3578
  19. 7090
  20. 9120
  21. 20610
  22. 21810
  23. 0.495
  24. 24240
  25. 387.1
  26. 0.3248
  27. 3.301
  28. 16730
  29. 992
  30. 167800
  31. 360100
  32. 0.1241
  33. 0.00531
  34. 18050
  35. 3014
  36. 0.1514
  37. 47.41
  38. 107300
  39. 128100
  40. 5460

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