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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 656 · 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. 1.320.4 × 10 =
  2. 2.81.4 × 1000 =
  3. 3.459.5 ÷ 10 =
  4. 4.24.79 ÷ 10 =
  5. 5.364.4 ÷ 1000 =
  6. 6.21.81 ÷ 100 =
  7. 7.35.6 ÷ 10 =
  8. 8.36.4 × 1000 =
  9. 9.226.7 × 1000 =
  10. 10.28.43 × 100 =
  11. 11.410.5 ÷ 1000 =
  12. 12.204.1 ÷ 100 =
  13. 13.490.7 ÷ 100 =
  14. 14.85.1 ÷ 1000 =
  15. 15.45.19 ÷ 100 =
  16. 16.41.86 ÷ 100 =
  17. 17.196.1 × 100 =
  18. 18.25.56 ÷ 10 =
  19. 19.429.8 × 100 =
  20. 20.40.1 ÷ 100 =
  21. 21.24.74 ÷ 100 =
  22. 22.355.9 ÷ 1000 =
  23. 23.4.75 × 10 =
  24. 24.293.3 ÷ 10 =
  25. 25.38.15 ÷ 1000 =
  26. 26.363.1 × 1000 =
  27. 27.277.6 × 10 =
  28. 28.114.8 × 1000 =
  29. 29.4.75 ÷ 10 =
  30. 30.131.1 ÷ 10 =
  31. 31.265.2 ÷ 10 =
  32. 32.325.1 ÷ 10 =
  33. 33.23.97 ÷ 100 =
  34. 34.77.9 × 10 =
  35. 35.2.08 × 100 =
  36. 36.190.5 ÷ 100 =
  37. 37.20.06 ÷ 10 =
  38. 38.166.7 × 10 =
  39. 39.24.04 × 1000 =
  40. 40.22.09 ÷ 10 =

Answer key

  1. 3204
  2. 81400
  3. 45.95
  4. 2.479
  5. 0.3644
  6. 0.2181
  7. 3.56
  8. 36400
  9. 226700
  10. 2843
  11. 0.4105
  12. 2.041
  13. 4.907
  14. 0.0851
  15. 0.4519
  16. 0.4186
  17. 19610
  18. 2.556
  19. 42980
  20. 0.401
  21. 0.2474
  22. 0.3559
  23. 47.5
  24. 29.33
  25. 0.03815
  26. 363100
  27. 2776
  28. 114800
  29. 0.475
  30. 13.11
  31. 26.52
  32. 32.51
  33. 0.2397
  34. 779
  35. 208
  36. 1.905
  37. 2.006
  38. 1667
  39. 24040
  40. 2.209

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