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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 688 · 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. 1.15.71 × 1000 =
  2. 2.23.7 × 10 =
  3. 3.36.44 × 10 =
  4. 4.40.81 ÷ 10 =
  5. 5.20.71 ÷ 10 =
  6. 6.9.71 ÷ 1000 =
  7. 7.44.1 × 10 =
  8. 8.43.43 × 100 =
  9. 9.14.06 ÷ 1000 =
  10. 10.310.5 ÷ 10 =
  11. 11.49.65 ÷ 10 =
  12. 12.393.2 × 100 =
  13. 13.331.7 × 10 =
  14. 14.324.5 × 1000 =
  15. 15.412.2 × 100 =
  16. 16.46.29 ÷ 10 =
  17. 17.311.1 ÷ 100 =
  18. 18.18.71 × 100 =
  19. 19.3.2 ÷ 100 =
  20. 20.22.2 × 10 =
  21. 21.24.2 × 100 =
  22. 22.46.01 × 10 =
  23. 23.22.71 × 1000 =
  24. 24.18.66 ÷ 10 =
  25. 25.370.2 ÷ 1000 =
  26. 26.296.2 × 10 =
  27. 27.15.95 × 10 =
  28. 28.19.64 ÷ 10 =
  29. 29.17.91 × 1000 =
  30. 30.44.53 × 100 =
  31. 31.485.6 × 10 =
  32. 32.11.1 × 10 =
  33. 33.40.83 × 10 =
  34. 34.34.97 ÷ 10 =
  35. 35.6.2 ÷ 10 =
  36. 36.54.8 × 1000 =
  37. 37.215.6 ÷ 100 =
  38. 38.337.4 × 1000 =
  39. 39.40.88 × 1000 =
  40. 40.26.53 ÷ 100 =

Answer key

  1. 15710
  2. 237
  3. 364.4
  4. 4.081
  5. 2.071
  6. 0.00971
  7. 441
  8. 4343
  9. 0.01406
  10. 31.05
  11. 4.965
  12. 39320
  13. 3317
  14. 324500
  15. 41220
  16. 4.629
  17. 3.111
  18. 1871
  19. 0.032
  20. 222
  21. 2420
  22. 460.1
  23. 22710
  24. 1.866
  25. 0.3702
  26. 2962
  27. 159.5
  28. 1.964
  29. 17910
  30. 4453
  31. 4856
  32. 111
  33. 408.3
  34. 3.497
  35. 0.62
  36. 54800
  37. 2.156
  38. 337400
  39. 40880
  40. 0.2653

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