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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 133 · 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. 1.30.23 ÷ 100 =
  2. 2.6.97 × 10 =
  3. 3.25.41 ÷ 1000 =
  4. 4.34.25 × 10 =
  5. 5.7.76 ÷ 10 =
  6. 6.38.45 × 100 =
  7. 7.435.8 × 1000 =
  8. 8.48.33 × 10 =
  9. 9.44.95 × 100 =
  10. 10.133.6 ÷ 10 =
  11. 11.332.2 × 100 =
  12. 12.59.5 ÷ 100 =
  13. 13.37.01 ÷ 100 =
  14. 14.31.29 ÷ 10 =
  15. 15.36.73 × 1000 =
  16. 16.15.51 ÷ 1000 =
  17. 17.15.42 × 10 =
  18. 18.10.4 ÷ 100 =
  19. 19.276.4 ÷ 10 =
  20. 20.478.8 ÷ 10 =
  21. 21.227.8 × 10 =
  22. 22.39.46 × 1000 =
  23. 23.40.93 ÷ 100 =
  24. 24.368.1 × 1000 =
  25. 25.7.33 × 10 =
  26. 26.5.21 × 100 =
  27. 27.25.76 ÷ 10 =
  28. 28.23.79 × 10 =
  29. 29.46.31 ÷ 1000 =
  30. 30.14.51 × 100 =
  31. 31.14.47 ÷ 10 =
  32. 32.391.9 ÷ 100 =
  33. 33.219.6 × 100 =
  34. 34.23.24 ÷ 1000 =
  35. 35.436.5 × 1000 =
  36. 36.278.1 ÷ 1000 =
  37. 37.170.2 × 10 =
  38. 38.44.69 ÷ 10 =
  39. 39.35.32 ÷ 10 =
  40. 40.2.9 ÷ 1000 =

Answer key

  1. 0.3023
  2. 69.7
  3. 0.02541
  4. 342.5
  5. 0.776
  6. 3845
  7. 435800
  8. 483.3
  9. 4495
  10. 13.36
  11. 33220
  12. 0.595
  13. 0.3701
  14. 3.129
  15. 36730
  16. 0.01551
  17. 154.2
  18. 0.104
  19. 27.64
  20. 47.88
  21. 2278
  22. 39460
  23. 0.4093
  24. 368100
  25. 73.3
  26. 521
  27. 2.576
  28. 237.9
  29. 0.04631
  30. 1451
  31. 1.447
  32. 3.919
  33. 21960
  34. 0.02324
  35. 436500
  36. 0.2781
  37. 1702
  38. 4.469
  39. 3.532
  40. 0.0029

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