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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 159 · 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. 1.61.5 × 1000 =
  2. 2.17.49 ÷ 1000 =
  3. 3.263.3 × 100 =
  4. 4.262.4 ÷ 10 =
  5. 5.0.54 ÷ 100 =
  6. 6.30.5 ÷ 1000 =
  7. 7.4.31 × 100 =
  8. 8.280.3 × 1000 =
  9. 9.73.1 ÷ 100 =
  10. 10.44.98 ÷ 10 =
  11. 11.287.5 × 10 =
  12. 12.480.8 ÷ 1000 =
  13. 13.78.1 ÷ 1000 =
  14. 14.37.69 × 1000 =
  15. 15.25.33 × 10 =
  16. 16.4.53 × 10 =
  17. 17.24.99 × 1000 =
  18. 18.176.5 × 100 =
  19. 19.272.9 ÷ 10 =
  20. 20.69.9 × 100 =
  21. 21.8.76 × 10 =
  22. 22.406.1 ÷ 10 =
  23. 23.1.85 ÷ 1000 =
  24. 24.267.4 ÷ 10 =
  25. 25.350.7 × 1000 =
  26. 26.95.4 ÷ 1000 =
  27. 27.11.82 ÷ 1000 =
  28. 28.29.51 ÷ 1000 =
  29. 29.7.69 ÷ 10 =
  30. 30.48.39 × 100 =
  31. 31.6.21 × 10 =
  32. 32.131.7 ÷ 1000 =
  33. 33.5.26 ÷ 10 =
  34. 34.44.02 ÷ 10 =
  35. 35.384.7 × 100 =
  36. 36.44.32 ÷ 10 =
  37. 37.7.67 × 100 =
  38. 38.26.11 × 100 =
  39. 39.143.3 ÷ 10 =
  40. 40.47.52 ÷ 10 =

Answer key

  1. 61500
  2. 0.01749
  3. 26330
  4. 26.24
  5. 0.0054
  6. 0.0305
  7. 431
  8. 280300
  9. 0.731
  10. 4.498
  11. 2875
  12. 0.4808
  13. 0.0781
  14. 37690
  15. 253.3
  16. 45.3
  17. 24990
  18. 17650
  19. 27.29
  20. 6990
  21. 87.6
  22. 40.61
  23. 0.00185
  24. 26.74
  25. 350700
  26. 0.0954
  27. 0.01182
  28. 0.02951
  29. 0.769
  30. 4839
  31. 62.1
  32. 0.1317
  33. 0.526
  34. 4.402
  35. 38470
  36. 4.432
  37. 767
  38. 2611
  39. 14.33
  40. 4.752

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