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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 758 · 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. 1.410.7 × 1000 =
  2. 2.329.1 × 10 =
  3. 3.4.66 ÷ 1000 =
  4. 4.359.7 × 100 =
  5. 5.43.81 ÷ 10 =
  6. 6.47.74 × 1000 =
  7. 7.16.51 × 10 =
  8. 8.25.71 ÷ 100 =
  9. 9.45.1 ÷ 1000 =
  10. 10.22.66 ÷ 100 =
  11. 11.174.6 ÷ 10 =
  12. 12.49.92 × 10 =
  13. 13.312.2 ÷ 1000 =
  14. 14.488.3 × 10 =
  15. 15.18.48 ÷ 10 =
  16. 16.106.1 ÷ 1000 =
  17. 17.474.1 ÷ 10 =
  18. 18.423.5 × 1000 =
  19. 19.204.8 × 10 =
  20. 20.267.1 ÷ 1000 =
  21. 21.402.1 × 1000 =
  22. 22.3.11 × 1000 =
  23. 23.24.93 ÷ 10 =
  24. 24.4.44 ÷ 1000 =
  25. 25.39.1 ÷ 10 =
  26. 26.153.1 × 10 =
  27. 27.10.81 × 10 =
  28. 28.262.6 × 100 =
  29. 29.4.39 ÷ 10 =
  30. 30.252.9 × 100 =
  31. 31.105.7 × 10 =
  32. 32.20.69 × 100 =
  33. 33.6.04 × 10 =
  34. 34.430.8 × 100 =
  35. 35.18.38 ÷ 100 =
  36. 36.247.5 ÷ 10 =
  37. 37.310.5 × 1000 =
  38. 38.44.05 ÷ 1000 =
  39. 39.9.11 ÷ 100 =
  40. 40.281.2 × 10 =

Answer key

  1. 410700
  2. 3291
  3. 0.00466
  4. 35970
  5. 4.381
  6. 47740
  7. 165.1
  8. 0.2571
  9. 0.0451
  10. 0.2266
  11. 17.46
  12. 499.2
  13. 0.3122
  14. 4883
  15. 1.848
  16. 0.1061
  17. 47.41
  18. 423500
  19. 2048
  20. 0.2671
  21. 402100
  22. 3110
  23. 2.493
  24. 0.00444
  25. 3.91
  26. 1531
  27. 108.1
  28. 26260
  29. 0.439
  30. 25290
  31. 1057
  32. 2069
  33. 60.4
  34. 43080
  35. 0.1838
  36. 24.75
  37. 310500
  38. 0.04405
  39. 0.0911
  40. 2812

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