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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 388 · 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. 1.448.1 × 10 =
  2. 2.414.7 × 1000 =
  3. 3.225.3 × 100 =
  4. 4.38.95 × 1000 =
  5. 5.44.91 × 10 =
  6. 6.38.92 ÷ 10 =
  7. 7.170.6 ÷ 1000 =
  8. 8.402.1 × 10 =
  9. 9.9.39 ÷ 100 =
  10. 10.21.91 ÷ 100 =
  11. 11.315.4 ÷ 100 =
  12. 12.2.88 × 1000 =
  13. 13.38.1 × 100 =
  14. 14.42.08 ÷ 10 =
  15. 15.376.1 × 10 =
  16. 16.131.4 ÷ 10 =
  17. 17.9.59 × 1000 =
  18. 18.37.28 ÷ 100 =
  19. 19.279.1 × 100 =
  20. 20.153.5 × 100 =
  21. 21.142.6 ÷ 10 =
  22. 22.100.2 × 100 =
  23. 23.0.69 × 1000 =
  24. 24.269.4 × 10 =
  25. 25.109.7 × 1000 =
  26. 26.32.11 × 10 =
  27. 27.265.1 ÷ 1000 =
  28. 28.0.65 ÷ 1000 =
  29. 29.420.8 ÷ 10 =
  30. 30.109.4 × 10 =
  31. 31.329.1 ÷ 1000 =
  32. 32.9.3 × 10 =
  33. 33.452.1 ÷ 100 =
  34. 34.10.34 ÷ 1000 =
  35. 35.44.08 ÷ 10 =
  36. 36.20.65 × 1000 =
  37. 37.3.81 ÷ 100 =
  38. 38.338.7 ÷ 1000 =
  39. 39.23.52 × 100 =
  40. 40.343.6 ÷ 10 =

Answer key

  1. 4481
  2. 414700
  3. 22530
  4. 38950
  5. 449.1
  6. 3.892
  7. 0.1706
  8. 4021
  9. 0.0939
  10. 0.2191
  11. 3.154
  12. 2880
  13. 3810
  14. 4.208
  15. 3761
  16. 13.14
  17. 9590
  18. 0.3728
  19. 27910
  20. 15350
  21. 14.26
  22. 10020
  23. 690
  24. 2694
  25. 109700
  26. 321.1
  27. 0.2651
  28. 0.00065
  29. 42.08
  30. 1094
  31. 0.3291
  32. 93
  33. 4.521
  34. 0.01034
  35. 4.408
  36. 20650
  37. 0.0381
  38. 0.3387
  39. 2352
  40. 34.36

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