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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 98 · 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. 1.372.9 × 10 =
  2. 2.33.9 × 10 =
  3. 3.3.41 × 100 =
  4. 4.14.61 × 1000 =
  5. 5.224.6 ÷ 100 =
  6. 6.14.91 ÷ 100 =
  7. 7.481.7 ÷ 1000 =
  8. 8.37.94 ÷ 100 =
  9. 9.2.41 × 10 =
  10. 10.475.7 ÷ 100 =
  11. 11.34.87 ÷ 100 =
  12. 12.23.26 × 10 =
  13. 13.34.31 × 10 =
  14. 14.95.9 × 100 =
  15. 15.291.6 ÷ 1000 =
  16. 16.400.4 × 100 =
  17. 17.3.86 ÷ 1000 =
  18. 18.480.2 × 10 =
  19. 19.13.75 × 100 =
  20. 20.182.9 × 100 =
  21. 21.15.81 ÷ 1000 =
  22. 22.11.18 ÷ 100 =
  23. 23.36.07 × 100 =
  24. 24.476.9 × 1000 =
  25. 25.429.2 ÷ 100 =
  26. 26.194.2 ÷ 10 =
  27. 27.365.1 × 100 =
  28. 28.332.4 ÷ 100 =
  29. 29.336.4 × 10 =
  30. 30.124.4 ÷ 1000 =
  31. 31.29.81 ÷ 100 =
  32. 32.22.37 ÷ 10 =
  33. 33.10.19 × 1000 =
  34. 34.6.95 × 1000 =
  35. 35.8.13 ÷ 1000 =
  36. 36.12.85 ÷ 10 =
  37. 37.12.01 × 100 =
  38. 38.210.8 × 1000 =
  39. 39.19.75 × 10 =
  40. 40.7.61 × 100 =

Answer key

  1. 3729
  2. 339
  3. 341
  4. 14610
  5. 2.246
  6. 0.1491
  7. 0.4817
  8. 0.3794
  9. 24.1
  10. 4.757
  11. 0.3487
  12. 232.6
  13. 343.1
  14. 9590
  15. 0.2916
  16. 40040
  17. 0.00386
  18. 4802
  19. 1375
  20. 18290
  21. 0.01581
  22. 0.1118
  23. 3607
  24. 476900
  25. 4.292
  26. 19.42
  27. 36510
  28. 3.324
  29. 3364
  30. 0.1244
  31. 0.2981
  32. 2.237
  33. 10190
  34. 6950
  35. 0.00813
  36. 1.285
  37. 1201
  38. 210800
  39. 197.5
  40. 761

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