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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 261 · 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. 1.337.1 × 10 =
  2. 2.260.9 ÷ 1000 =
  3. 3.40.15 × 10 =
  4. 4.291.8 ÷ 100 =
  5. 5.163.2 × 1000 =
  6. 6.171.6 ÷ 1000 =
  7. 7.138.2 ÷ 1000 =
  8. 8.39.67 ÷ 1000 =
  9. 9.37.57 ÷ 1000 =
  10. 10.18.31 ÷ 1000 =
  11. 11.44.04 × 100 =
  12. 12.35.72 ÷ 10 =
  13. 13.199.4 ÷ 10 =
  14. 14.115.1 ÷ 100 =
  15. 15.416.1 × 10 =
  16. 16.105.7 ÷ 10 =
  17. 17.33.53 ÷ 100 =
  18. 18.126.7 ÷ 1000 =
  19. 19.35.51 ÷ 100 =
  20. 20.1.91 × 10 =
  21. 21.30.87 × 10 =
  22. 22.1.52 ÷ 10 =
  23. 23.78.1 ÷ 10 =
  24. 24.435.7 ÷ 10 =
  25. 25.397.2 ÷ 1000 =
  26. 26.26.96 ÷ 10 =
  27. 27.403.3 ÷ 100 =
  28. 28.10.85 × 10 =
  29. 29.85.7 ÷ 100 =
  30. 30.0.55 ÷ 1000 =
  31. 31.412.1 × 10 =
  32. 32.25.71 × 10 =
  33. 33.237.6 × 1000 =
  34. 34.124.6 ÷ 10 =
  35. 35.71.5 ÷ 100 =
  36. 36.358.1 × 1000 =
  37. 37.35.88 × 1000 =
  38. 38.217.5 ÷ 1000 =
  39. 39.45.31 ÷ 10 =
  40. 40.202.4 × 10 =

Answer key

  1. 3371
  2. 0.2609
  3. 401.5
  4. 2.918
  5. 163200
  6. 0.1716
  7. 0.1382
  8. 0.03967
  9. 0.03757
  10. 0.01831
  11. 4404
  12. 3.572
  13. 19.94
  14. 1.151
  15. 4161
  16. 10.57
  17. 0.3353
  18. 0.1267
  19. 0.3551
  20. 19.1
  21. 308.7
  22. 0.152
  23. 7.81
  24. 43.57
  25. 0.3972
  26. 2.696
  27. 4.033
  28. 108.5
  29. 0.857
  30. 0.00055
  31. 4121
  32. 257.1
  33. 237600
  34. 12.46
  35. 0.715
  36. 358100
  37. 35880
  38. 0.2175
  39. 4.531
  40. 2024

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