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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 575 · 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. 1.87.8 ÷ 10 =
  2. 2.68.6 × 1000 =
  3. 3.89.1 × 100 =
  4. 4.24.74 × 1000 =
  5. 5.14.65 ÷ 1000 =
  6. 6.48.7 ÷ 10 =
  7. 7.112.2 × 100 =
  8. 8.14.36 ÷ 10 =
  9. 9.23.35 ÷ 1000 =
  10. 10.5.16 ÷ 1000 =
  11. 11.104.4 × 1000 =
  12. 12.0.29 ÷ 100 =
  13. 13.140.5 × 10 =
  14. 14.65.4 × 10 =
  15. 15.177.3 ÷ 10 =
  16. 16.9.82 × 100 =
  17. 17.6.18 ÷ 1000 =
  18. 18.5.82 ÷ 100 =
  19. 19.63.4 × 10 =
  20. 20.39.44 × 100 =
  21. 21.238.3 × 10 =
  22. 22.12.1 ÷ 10 =
  23. 23.49.81 ÷ 100 =
  24. 24.7.63 × 1000 =
  25. 25.17.5 × 10 =
  26. 26.8.38 × 1000 =
  27. 27.28.84 ÷ 100 =
  28. 28.344.1 ÷ 10 =
  29. 29.5.64 × 1000 =
  30. 30.464.1 × 10 =
  31. 31.6.02 × 10 =
  32. 32.32.34 ÷ 10 =
  33. 33.355.3 × 100 =
  34. 34.160.7 ÷ 10 =
  35. 35.32.1 ÷ 10 =
  36. 36.15.91 ÷ 10 =
  37. 37.445.4 × 10 =
  38. 38.22.02 × 1000 =
  39. 39.37.81 ÷ 10 =
  40. 40.6.98 × 100 =

Answer key

  1. 8.78
  2. 68600
  3. 8910
  4. 24740
  5. 0.01465
  6. 4.87
  7. 11220
  8. 1.436
  9. 0.02335
  10. 0.00516
  11. 104400
  12. 0.0029
  13. 1405
  14. 654
  15. 17.73
  16. 982
  17. 0.00618
  18. 0.0582
  19. 634
  20. 3944
  21. 2383
  22. 1.21
  23. 0.4981
  24. 7630
  25. 175
  26. 8380
  27. 0.2884
  28. 34.41
  29. 5640
  30. 4641
  31. 60.2
  32. 3.234
  33. 35530
  34. 16.07
  35. 3.21
  36. 1.591
  37. 4454
  38. 22020
  39. 3.781
  40. 698

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