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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 686 · 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. 1.24.54 × 100 =
  2. 2.394.2 ÷ 10 =
  3. 3.140.1 × 10 =
  4. 4.59.9 ÷ 100 =
  5. 5.168.5 × 10 =
  6. 6.28.61 × 10 =
  7. 7.279.5 ÷ 10 =
  8. 8.24.15 × 1000 =
  9. 9.250.1 × 10 =
  10. 10.323.6 × 100 =
  11. 11.28.5 × 10 =
  12. 12.378.3 ÷ 10 =
  13. 13.4.15 × 100 =
  14. 14.243.6 × 100 =
  15. 15.48.11 ÷ 10 =
  16. 16.12.12 × 100 =
  17. 17.22.91 ÷ 100 =
  18. 18.42.81 × 100 =
  19. 19.107.8 × 10 =
  20. 20.252.9 ÷ 100 =
  21. 21.3.2 × 1000 =
  22. 22.46.27 × 1000 =
  23. 23.23.53 × 100 =
  24. 24.435.7 × 1000 =
  25. 25.7.13 ÷ 100 =
  26. 26.358.9 ÷ 10 =
  27. 27.105.7 ÷ 1000 =
  28. 28.242.1 × 10 =
  29. 29.211.4 ÷ 10 =
  30. 30.23.4 × 100 =
  31. 31.94.9 ÷ 10 =
  32. 32.448.4 × 100 =
  33. 33.14.2 × 10 =
  34. 34.7.7 × 1000 =
  35. 35.341.1 × 1000 =
  36. 36.420.1 ÷ 10 =
  37. 37.30.21 ÷ 1000 =
  38. 38.21.03 × 100 =
  39. 39.218.5 ÷ 10 =
  40. 40.46.36 ÷ 1000 =

Answer key

  1. 2454
  2. 39.42
  3. 1401
  4. 0.599
  5. 1685
  6. 286.1
  7. 27.95
  8. 24150
  9. 2501
  10. 32360
  11. 285
  12. 37.83
  13. 415
  14. 24360
  15. 4.811
  16. 1212
  17. 0.2291
  18. 4281
  19. 1078
  20. 2.529
  21. 3200
  22. 46270
  23. 2353
  24. 435700
  25. 0.0713
  26. 35.89
  27. 0.1057
  28. 2421
  29. 21.14
  30. 2340
  31. 9.49
  32. 44840
  33. 142
  34. 7700
  35. 341100
  36. 42.01
  37. 0.03021
  38. 2103
  39. 21.85
  40. 0.04636

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