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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 418 · 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. 1.204.3 × 10 =
  2. 2.343.7 × 1000 =
  3. 3.3.84 ÷ 10 =
  4. 4.354.9 × 10 =
  5. 5.0.68 × 10 =
  6. 6.98.6 × 1000 =
  7. 7.338.2 ÷ 10 =
  8. 8.394.8 × 1000 =
  9. 9.28.99 × 100 =
  10. 10.118.9 ÷ 1000 =
  11. 11.42.11 ÷ 10 =
  12. 12.37.8 × 10 =
  13. 13.12.57 ÷ 100 =
  14. 14.72.7 ÷ 10 =
  15. 15.49.04 ÷ 10 =
  16. 16.413.8 × 1000 =
  17. 17.27.01 ÷ 1000 =
  18. 18.102.1 × 10 =
  19. 19.291.1 × 100 =
  20. 20.249.1 ÷ 1000 =
  21. 21.481.4 ÷ 10 =
  22. 22.143.3 × 100 =
  23. 23.129.7 × 10 =
  24. 24.7.11 ÷ 10 =
  25. 25.23.66 ÷ 10 =
  26. 26.25.21 × 1000 =
  27. 27.252.6 ÷ 1000 =
  28. 28.436.8 × 100 =
  29. 29.4.09 × 1000 =
  30. 30.47.88 × 10 =
  31. 31.463.6 × 10 =
  32. 32.121.6 × 1000 =
  33. 33.21.1 ÷ 1000 =
  34. 34.192.8 ÷ 1000 =
  35. 35.40.89 ÷ 10 =
  36. 36.490.6 × 100 =
  37. 37.43.81 × 10 =
  38. 38.421.1 × 100 =
  39. 39.238.1 × 1000 =
  40. 40.418.6 × 10 =

Answer key

  1. 2043
  2. 343700
  3. 0.384
  4. 3549
  5. 6.8
  6. 98600
  7. 33.82
  8. 394800
  9. 2899
  10. 0.1189
  11. 4.211
  12. 378
  13. 0.1257
  14. 7.27
  15. 4.904
  16. 413800
  17. 0.02701
  18. 1021
  19. 29110
  20. 0.2491
  21. 48.14
  22. 14330
  23. 1297
  24. 0.711
  25. 2.366
  26. 25210
  27. 0.2526
  28. 43680
  29. 4090
  30. 478.8
  31. 4636
  32. 121600
  33. 0.0211
  34. 0.1928
  35. 4.089
  36. 49060
  37. 438.1
  38. 42110
  39. 238100
  40. 4186

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