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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 518 · 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. 1.2.89 × 1000 =
  2. 2.79.6 × 10 =
  3. 3.322.2 ÷ 10 =
  4. 4.31.26 ÷ 10 =
  5. 5.7.71 × 100 =
  6. 6.381.6 ÷ 100 =
  7. 7.265.1 ÷ 10 =
  8. 8.40.51 ÷ 10 =
  9. 9.322.5 ÷ 100 =
  10. 10.370.1 × 1000 =
  11. 11.15.85 × 100 =
  12. 12.393.1 × 100 =
  13. 13.445.8 ÷ 100 =
  14. 14.38.75 ÷ 10 =
  15. 15.122.9 × 10 =
  16. 16.42.81 ÷ 100 =
  17. 17.73.3 ÷ 10 =
  18. 18.6.6 × 100 =
  19. 19.15.31 × 10 =
  20. 20.110.6 × 10 =
  21. 21.46.51 × 100 =
  22. 22.17.13 × 100 =
  23. 23.448.3 × 100 =
  24. 24.77.9 ÷ 100 =
  25. 25.28.88 ÷ 100 =
  26. 26.39.45 ÷ 100 =
  27. 27.251.1 × 1000 =
  28. 28.4.85 × 100 =
  29. 29.267.4 × 10 =
  30. 30.47.89 ÷ 1000 =
  31. 31.2.49 ÷ 1000 =
  32. 32.9.64 × 100 =
  33. 33.110.3 × 1000 =
  34. 34.33.13 ÷ 10 =
  35. 35.1.02 × 1000 =
  36. 36.37.64 × 100 =
  37. 37.421.1 ÷ 10 =
  38. 38.14.31 ÷ 1000 =
  39. 39.24.81 × 100 =
  40. 40.24.89 × 100 =

Answer key

  1. 2890
  2. 796
  3. 32.22
  4. 3.126
  5. 771
  6. 3.816
  7. 26.51
  8. 4.051
  9. 3.225
  10. 370100
  11. 1585
  12. 39310
  13. 4.458
  14. 3.875
  15. 1229
  16. 0.4281
  17. 7.33
  18. 660
  19. 153.1
  20. 1106
  21. 4651
  22. 1713
  23. 44830
  24. 0.779
  25. 0.2888
  26. 0.3945
  27. 251100
  28. 485
  29. 2674
  30. 0.04789
  31. 0.00249
  32. 964
  33. 110300
  34. 3.313
  35. 1020
  36. 3764
  37. 42.11
  38. 0.01431
  39. 2481
  40. 2489

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