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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 313 · 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. 1.44.65 ÷ 1000 =
  2. 2.10.88 × 100 =
  3. 3.30.78 ÷ 1000 =
  4. 4.333.6 ÷ 1000 =
  5. 5.17.06 ÷ 1000 =
  6. 6.452.5 × 100 =
  7. 7.2.57 × 100 =
  8. 8.398.1 ÷ 100 =
  9. 9.168.2 × 10 =
  10. 10.475.7 ÷ 10 =
  11. 11.21.19 × 1000 =
  12. 12.259.1 × 100 =
  13. 13.119.8 × 10 =
  14. 14.16.34 ÷ 10 =
  15. 15.5.18 ÷ 100 =
  16. 16.441.2 ÷ 10 =
  17. 17.356.5 × 10 =
  18. 18.7.23 ÷ 10 =
  19. 19.29.07 × 1000 =
  20. 20.25.55 ÷ 100 =
  21. 21.41.88 ÷ 1000 =
  22. 22.36.41 × 100 =
  23. 23.15.54 × 10 =
  24. 24.40.21 × 100 =
  25. 25.27.79 ÷ 100 =
  26. 26.157.8 ÷ 100 =
  27. 27.49.7 × 100 =
  28. 28.27.61 × 10 =
  29. 29.254.9 × 100 =
  30. 30.33.3 × 10 =
  31. 31.367.9 × 100 =
  32. 32.34.54 × 100 =
  33. 33.12.89 × 10 =
  34. 34.389.2 × 100 =
  35. 35.22.52 ÷ 100 =
  36. 36.23.38 × 100 =
  37. 37.495.2 × 100 =
  38. 38.245.8 × 1000 =
  39. 39.181.3 × 10 =
  40. 40.147.5 ÷ 1000 =

Answer key

  1. 0.04465
  2. 1088
  3. 0.03078
  4. 0.3336
  5. 0.01706
  6. 45250
  7. 257
  8. 3.981
  9. 1682
  10. 47.57
  11. 21190
  12. 25910
  13. 1198
  14. 1.634
  15. 0.0518
  16. 44.12
  17. 3565
  18. 0.723
  19. 29070
  20. 0.2555
  21. 0.04188
  22. 3641
  23. 155.4
  24. 4021
  25. 0.2779
  26. 1.578
  27. 4970
  28. 276.1
  29. 25490
  30. 333
  31. 36790
  32. 3454
  33. 128.9
  34. 38920
  35. 0.2252
  36. 2338
  37. 49520
  38. 245800
  39. 1813
  40. 0.1475

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