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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 362 · 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. 1.8.66 ÷ 1000 =
  2. 2.44.71 × 100 =
  3. 3.7.95 × 10 =
  4. 4.18.4 × 10 =
  5. 5.25.87 ÷ 100 =
  6. 6.70.3 × 10 =
  7. 7.39.75 × 1000 =
  8. 8.49.74 × 100 =
  9. 9.34.31 × 10 =
  10. 10.169.3 ÷ 1000 =
  11. 11.23.91 ÷ 1000 =
  12. 12.42.36 × 1000 =
  13. 13.30.2 ÷ 1000 =
  14. 14.10.04 × 10 =
  15. 15.102.2 ÷ 10 =
  16. 16.237.1 × 100 =
  17. 17.2.71 × 100 =
  18. 18.15.45 ÷ 1000 =
  19. 19.353.7 × 10 =
  20. 20.32.81 ÷ 10 =
  21. 21.439.1 ÷ 10 =
  22. 22.64.1 ÷ 10 =
  23. 23.57.4 × 100 =
  24. 24.11.35 × 1000 =
  25. 25.22.03 ÷ 1000 =
  26. 26.45.41 × 100 =
  27. 27.17.78 ÷ 100 =
  28. 28.11.77 × 10 =
  29. 29.91.2 × 100 =
  30. 30.19.46 ÷ 10 =
  31. 31.14.38 ÷ 1000 =
  32. 32.18.96 × 100 =
  33. 33.353.6 × 100 =
  34. 34.355.1 ÷ 100 =
  35. 35.130.5 × 10 =
  36. 36.256.7 ÷ 100 =
  37. 37.23.62 ÷ 100 =
  38. 38.331.4 ÷ 10 =
  39. 39.391.7 ÷ 10 =
  40. 40.38.6 × 100 =

Answer key

  1. 0.00866
  2. 4471
  3. 79.5
  4. 184
  5. 0.2587
  6. 703
  7. 39750
  8. 4974
  9. 343.1
  10. 0.1693
  11. 0.02391
  12. 42360
  13. 0.0302
  14. 100.4
  15. 10.22
  16. 23710
  17. 271
  18. 0.01545
  19. 3537
  20. 3.281
  21. 43.91
  22. 6.41
  23. 5740
  24. 11350
  25. 0.02203
  26. 4541
  27. 0.1778
  28. 117.7
  29. 9120
  30. 1.946
  31. 0.01438
  32. 1896
  33. 35360
  34. 3.551
  35. 1305
  36. 2.567
  37. 0.2362
  38. 33.14
  39. 39.17
  40. 3860

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