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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 457 · 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. 1.186.9 × 1000 =
  2. 2.9.08 × 1000 =
  3. 3.11.87 × 1000 =
  4. 4.210.9 × 10 =
  5. 5.2.17 ÷ 1000 =
  6. 6.251.4 ÷ 1000 =
  7. 7.49.61 × 100 =
  8. 8.17.78 ÷ 100 =
  9. 9.345.3 × 10 =
  10. 10.34.26 ÷ 100 =
  11. 11.10.84 ÷ 10 =
  12. 12.179.6 ÷ 10 =
  13. 13.211.6 ÷ 10 =
  14. 14.25.12 × 1000 =
  15. 15.94.5 ÷ 100 =
  16. 16.13.93 × 1000 =
  17. 17.38.73 × 1000 =
  18. 18.8.35 × 1000 =
  19. 19.15.91 × 100 =
  20. 20.20.88 × 100 =
  21. 21.307.6 × 100 =
  22. 22.476.8 × 1000 =
  23. 23.13.39 ÷ 100 =
  24. 24.86.2 ÷ 100 =
  25. 25.36.2 ÷ 1000 =
  26. 26.46.81 × 1000 =
  27. 27.241.3 ÷ 100 =
  28. 28.378.1 ÷ 100 =
  29. 29.45.24 × 1000 =
  30. 30.315.1 × 10 =
  31. 31.34.02 ÷ 10 =
  32. 32.42.35 × 10 =
  33. 33.298.5 ÷ 100 =
  34. 34.350.1 ÷ 10 =
  35. 35.21.69 × 100 =
  36. 36.3.28 × 10 =
  37. 37.20.82 × 1000 =
  38. 38.34.93 × 1000 =
  39. 39.45.17 ÷ 10 =
  40. 40.194.4 × 10 =

Answer key

  1. 186900
  2. 9080
  3. 11870
  4. 2109
  5. 0.00217
  6. 0.2514
  7. 4961
  8. 0.1778
  9. 3453
  10. 0.3426
  11. 1.084
  12. 17.96
  13. 21.16
  14. 25120
  15. 0.945
  16. 13930
  17. 38730
  18. 8350
  19. 1591
  20. 2088
  21. 30760
  22. 476800
  23. 0.1339
  24. 0.862
  25. 0.0362
  26. 46810
  27. 2.413
  28. 3.781
  29. 45240
  30. 3151
  31. 3.402
  32. 423.5
  33. 2.985
  34. 35.01
  35. 2169
  36. 32.8
  37. 20820
  38. 34930
  39. 4.517
  40. 1944

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