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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 646 · 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. 1.31.62 ÷ 1000 =
  2. 2.54.1 ÷ 10 =
  3. 3.347.1 ÷ 100 =
  4. 4.278.1 × 1000 =
  5. 5.33.91 × 1000 =
  6. 6.47.31 ÷ 1000 =
  7. 7.220.6 × 1000 =
  8. 8.334.3 × 100 =
  9. 9.284.2 × 10 =
  10. 10.3.83 × 100 =
  11. 11.205.7 ÷ 1000 =
  12. 12.398.6 ÷ 10 =
  13. 13.342.5 ÷ 10 =
  14. 14.34.09 ÷ 10 =
  15. 15.226.5 × 1000 =
  16. 16.61.5 × 100 =
  17. 17.77.3 ÷ 10 =
  18. 18.40.52 × 1000 =
  19. 19.359.5 ÷ 1000 =
  20. 20.322.6 × 100 =
  21. 21.26.62 ÷ 100 =
  22. 22.39.3 × 10 =
  23. 23.32.41 ÷ 1000 =
  24. 24.175.4 ÷ 100 =
  25. 25.221.7 ÷ 10 =
  26. 26.49.92 ÷ 1000 =
  27. 27.209.6 ÷ 10 =
  28. 28.379.2 × 10 =
  29. 29.0.86 × 100 =
  30. 30.43.06 × 10 =
  31. 31.2.96 ÷ 1000 =
  32. 32.13.35 ÷ 1000 =
  33. 33.16.53 × 10 =
  34. 34.8.55 ÷ 100 =
  35. 35.55.1 × 10 =
  36. 36.5.76 × 100 =
  37. 37.139.9 ÷ 10 =
  38. 38.23.45 × 1000 =
  39. 39.358.5 ÷ 100 =
  40. 40.1.57 × 100 =

Answer key

  1. 0.03162
  2. 5.41
  3. 3.471
  4. 278100
  5. 33910
  6. 0.04731
  7. 220600
  8. 33430
  9. 2842
  10. 383
  11. 0.2057
  12. 39.86
  13. 34.25
  14. 3.409
  15. 226500
  16. 6150
  17. 7.73
  18. 40520
  19. 0.3595
  20. 32260
  21. 0.2662
  22. 393
  23. 0.03241
  24. 1.754
  25. 22.17
  26. 0.04992
  27. 20.96
  28. 3792
  29. 86
  30. 430.6
  31. 0.00296
  32. 0.01335
  33. 165.3
  34. 0.0855
  35. 551
  36. 576
  37. 13.99
  38. 23450
  39. 3.585
  40. 157

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