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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 463 · 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. 1.35.31 × 100 =
  2. 2.188.1 ÷ 10 =
  3. 3.3.2 × 100 =
  4. 4.257.2 ÷ 1000 =
  5. 5.310.3 × 10 =
  6. 6.343.2 × 10 =
  7. 7.1.72 × 1000 =
  8. 8.21.3 ÷ 10 =
  9. 9.5.9 ÷ 1000 =
  10. 10.308.7 × 10 =
  11. 11.211.7 × 1000 =
  12. 12.28.78 ÷ 1000 =
  13. 13.71.6 × 100 =
  14. 14.9.73 ÷ 1000 =
  15. 15.220.7 × 10 =
  16. 16.8.26 × 10 =
  17. 17.37.02 ÷ 1000 =
  18. 18.280.7 × 1000 =
  19. 19.241.4 ÷ 1000 =
  20. 20.147.1 ÷ 10 =
  21. 21.14.18 × 1000 =
  22. 22.26.92 × 1000 =
  23. 23.29.73 × 1000 =
  24. 24.24.2 × 100 =
  25. 25.41.39 × 100 =
  26. 26.404.4 × 10 =
  27. 27.29.01 × 10 =
  28. 28.24.81 × 1000 =
  29. 29.36.04 ÷ 10 =
  30. 30.27.63 × 10 =
  31. 31.31.14 ÷ 1000 =
  32. 32.46.79 × 1000 =
  33. 33.45.58 ÷ 100 =
  34. 34.5.64 × 10 =
  35. 35.17.49 ÷ 10 =
  36. 36.291.3 ÷ 1000 =
  37. 37.17.71 × 1000 =
  38. 38.446.1 ÷ 1000 =
  39. 39.448.1 × 1000 =
  40. 40.477.8 ÷ 100 =

Answer key

  1. 3531
  2. 18.81
  3. 320
  4. 0.2572
  5. 3103
  6. 3432
  7. 1720
  8. 2.13
  9. 0.0059
  10. 3087
  11. 211700
  12. 0.02878
  13. 7160
  14. 0.00973
  15. 2207
  16. 82.6
  17. 0.03702
  18. 280700
  19. 0.2414
  20. 14.71
  21. 14180
  22. 26920
  23. 29730
  24. 2420
  25. 4139
  26. 4044
  27. 290.1
  28. 24810
  29. 3.604
  30. 276.3
  31. 0.03114
  32. 46790
  33. 0.4558
  34. 56.4
  35. 1.749
  36. 0.2913
  37. 17710
  38. 0.4461
  39. 448100
  40. 4.778

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