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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 451 · 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. 1.262.1 ÷ 1000 =
  2. 2.36.91 ÷ 10 =
  3. 3.351.5 × 1000 =
  4. 4.25.94 ÷ 100 =
  5. 5.31.1 × 1000 =
  6. 6.25.71 ÷ 10 =
  7. 7.7.54 × 10 =
  8. 8.149.1 × 1000 =
  9. 9.146.6 × 10 =
  10. 10.18.41 ÷ 10 =
  11. 11.28.95 ÷ 10 =
  12. 12.18.17 × 1000 =
  13. 13.244.7 ÷ 10 =
  14. 14.285.5 × 10 =
  15. 15.0.43 ÷ 10 =
  16. 16.44.84 × 10 =
  17. 17.7.84 ÷ 100 =
  18. 18.234.1 ÷ 1000 =
  19. 19.39.92 ÷ 1000 =
  20. 20.252.2 ÷ 1000 =
  21. 21.19.5 ÷ 10 =
  22. 22.39.34 ÷ 100 =
  23. 23.420.5 × 1000 =
  24. 24.31.81 ÷ 100 =
  25. 25.9.38 × 10 =
  26. 26.313.2 ÷ 100 =
  27. 27.41.67 × 10 =
  28. 28.445.6 × 1000 =
  29. 29.309.1 × 10 =
  30. 30.175.2 ÷ 10 =
  31. 31.2.77 × 10 =
  32. 32.476.5 × 1000 =
  33. 33.39.05 ÷ 1000 =
  34. 34.4.61 ÷ 10 =
  35. 35.24.47 ÷ 1000 =
  36. 36.386.5 ÷ 1000 =
  37. 37.22.99 × 10 =
  38. 38.171.5 ÷ 10 =
  39. 39.46.21 ÷ 10 =
  40. 40.14.47 ÷ 1000 =

Answer key

  1. 0.2621
  2. 3.691
  3. 351500
  4. 0.2594
  5. 31100
  6. 2.571
  7. 75.4
  8. 149100
  9. 1466
  10. 1.841
  11. 2.895
  12. 18170
  13. 24.47
  14. 2855
  15. 0.043
  16. 448.4
  17. 0.0784
  18. 0.2341
  19. 0.03992
  20. 0.2522
  21. 1.95
  22. 0.3934
  23. 420500
  24. 0.3181
  25. 93.8
  26. 3.132
  27. 416.7
  28. 445600
  29. 3091
  30. 17.52
  31. 27.7
  32. 476500
  33. 0.03905
  34. 0.461
  35. 0.02447
  36. 0.3865
  37. 229.9
  38. 17.15
  39. 4.621
  40. 0.01447

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