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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 449 · 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. 1.25.79 × 1000 =
  2. 2.58.3 × 10 =
  3. 3.231.8 ÷ 10 =
  4. 4.31.21 ÷ 100 =
  5. 5.322.6 × 10 =
  6. 6.71.5 × 100 =
  7. 7.3.56 ÷ 1000 =
  8. 8.5.67 × 100 =
  9. 9.379.4 × 10 =
  10. 10.13.07 × 10 =
  11. 11.23.32 × 10 =
  12. 12.27.11 × 100 =
  13. 13.274.6 ÷ 100 =
  14. 14.313.8 ÷ 100 =
  15. 15.251.6 ÷ 1000 =
  16. 16.22.2 ÷ 1000 =
  17. 17.71.4 ÷ 100 =
  18. 18.2.79 × 1000 =
  19. 19.27.33 × 100 =
  20. 20.48.34 ÷ 100 =
  21. 21.40.55 × 100 =
  22. 22.23.69 × 100 =
  23. 23.39.92 ÷ 10 =
  24. 24.41.6 ÷ 100 =
  25. 25.421.1 ÷ 100 =
  26. 26.43.29 ÷ 10 =
  27. 27.324.6 ÷ 100 =
  28. 28.376.5 × 100 =
  29. 29.93.4 ÷ 10 =
  30. 30.336.3 ÷ 1000 =
  31. 31.282.1 × 10 =
  32. 32.44.38 ÷ 10 =
  33. 33.30.49 ÷ 10 =
  34. 34.371.2 × 1000 =
  35. 35.164.5 × 10 =
  36. 36.2.81 ÷ 10 =
  37. 37.486.9 × 10 =
  38. 38.6.92 × 10 =
  39. 39.5.51 ÷ 1000 =
  40. 40.17.48 × 100 =

Answer key

  1. 25790
  2. 583
  3. 23.18
  4. 0.3121
  5. 3226
  6. 7150
  7. 0.00356
  8. 567
  9. 3794
  10. 130.7
  11. 233.2
  12. 2711
  13. 2.746
  14. 3.138
  15. 0.2516
  16. 0.0222
  17. 0.714
  18. 2790
  19. 2733
  20. 0.4834
  21. 4055
  22. 2369
  23. 3.992
  24. 0.416
  25. 4.211
  26. 4.329
  27. 3.246
  28. 37650
  29. 9.34
  30. 0.3363
  31. 2821
  32. 4.438
  33. 3.049
  34. 371200
  35. 1645
  36. 0.281
  37. 4869
  38. 69.2
  39. 0.00551
  40. 1748

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