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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 345 · 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. 1.31.66 ÷ 10 =
  2. 2.21.04 × 10 =
  3. 3.6.96 × 100 =
  4. 4.20.95 ÷ 10 =
  5. 5.257.8 × 100 =
  6. 6.476.4 × 1000 =
  7. 7.411.7 ÷ 100 =
  8. 8.34.42 × 100 =
  9. 9.97.8 × 10 =
  10. 10.6.67 × 1000 =
  11. 11.227.7 ÷ 10 =
  12. 12.297.1 ÷ 1000 =
  13. 13.115.2 ÷ 10 =
  14. 14.465.3 × 100 =
  15. 15.7.59 ÷ 10 =
  16. 16.23.07 ÷ 10 =
  17. 17.357.5 × 100 =
  18. 18.18.23 ÷ 1000 =
  19. 19.341.8 × 100 =
  20. 20.48.94 × 10 =
  21. 21.64.8 × 10 =
  22. 22.49.51 × 1000 =
  23. 23.17.14 × 1000 =
  24. 24.472.3 ÷ 1000 =
  25. 25.65.3 ÷ 100 =
  26. 26.90.1 × 100 =
  27. 27.20.7 × 10 =
  28. 28.172.8 ÷ 1000 =
  29. 29.478.6 ÷ 10 =
  30. 30.31.54 × 1000 =
  31. 31.8.01 ÷ 100 =
  32. 32.432.9 × 10 =
  33. 33.19.44 × 10 =
  34. 34.16.25 × 10 =
  35. 35.42.71 × 1000 =
  36. 36.38.48 ÷ 10 =
  37. 37.383.7 ÷ 1000 =
  38. 38.42.46 ÷ 10 =
  39. 39.418.7 ÷ 100 =
  40. 40.12.17 × 100 =

Answer key

  1. 3.166
  2. 210.4
  3. 696
  4. 2.095
  5. 25780
  6. 476400
  7. 4.117
  8. 3442
  9. 978
  10. 6670
  11. 22.77
  12. 0.2971
  13. 11.52
  14. 46530
  15. 0.759
  16. 2.307
  17. 35750
  18. 0.01823
  19. 34180
  20. 489.4
  21. 648
  22. 49510
  23. 17140
  24. 0.4723
  25. 0.653
  26. 9010
  27. 207
  28. 0.1728
  29. 47.86
  30. 31540
  31. 0.0801
  32. 4329
  33. 194.4
  34. 162.5
  35. 42710
  36. 3.848
  37. 0.3837
  38. 4.246
  39. 4.187
  40. 1217

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