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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 818 · 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. 1.8.62 × 10 =
  2. 2.16.35 × 100 =
  3. 3.28.89 × 1000 =
  4. 4.10.46 ÷ 10 =
  5. 5.304.1 × 1000 =
  6. 6.455.1 × 10 =
  7. 7.494.9 ÷ 1000 =
  8. 8.26.41 × 1000 =
  9. 9.74.4 × 100 =
  10. 10.14.71 × 10 =
  11. 11.409.1 × 10 =
  12. 12.464.9 × 10 =
  13. 13.36.91 × 10 =
  14. 14.293.1 ÷ 10 =
  15. 15.23.88 × 1000 =
  16. 16.74.5 × 100 =
  17. 17.376.1 × 1000 =
  18. 18.163.2 × 100 =
  19. 19.358.2 × 1000 =
  20. 20.169.3 ÷ 10 =
  21. 21.431.1 ÷ 10 =
  22. 22.57.9 ÷ 10 =
  23. 23.6.81 × 10 =
  24. 24.3.6 × 100 =
  25. 25.149.9 ÷ 1000 =
  26. 26.28.12 ÷ 10 =
  27. 27.308.4 × 10 =
  28. 28.193.5 × 100 =
  29. 29.389.2 × 1000 =
  30. 30.194.1 × 100 =
  31. 31.40.32 × 1000 =
  32. 32.46.2 × 10 =
  33. 33.11.53 ÷ 1000 =
  34. 34.26.2 × 10 =
  35. 35.479.5 × 1000 =
  36. 36.219.9 ÷ 1000 =
  37. 37.44.81 × 10 =
  38. 38.7.41 ÷ 1000 =
  39. 39.421.1 ÷ 100 =
  40. 40.384.7 ÷ 10 =

Answer key

  1. 86.2
  2. 1635
  3. 28890
  4. 1.046
  5. 304100
  6. 4551
  7. 0.4949
  8. 26410
  9. 7440
  10. 147.1
  11. 4091
  12. 4649
  13. 369.1
  14. 29.31
  15. 23880
  16. 7450
  17. 376100
  18. 16320
  19. 358200
  20. 16.93
  21. 43.11
  22. 5.79
  23. 68.1
  24. 360
  25. 0.1499
  26. 2.812
  27. 3084
  28. 19350
  29. 389200
  30. 19410
  31. 40320
  32. 462
  33. 0.01153
  34. 262
  35. 479500
  36. 0.2199
  37. 448.1
  38. 0.00741
  39. 4.211
  40. 38.47

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