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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 579 · 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. 1.46.08 × 10 =
  2. 2.468.8 ÷ 10 =
  3. 3.420.1 ÷ 10 =
  4. 4.38.53 ÷ 10 =
  5. 5.29.09 × 100 =
  6. 6.29.22 ÷ 10 =
  7. 7.7.94 × 10 =
  8. 8.7.51 × 10 =
  9. 9.363.7 × 10 =
  10. 10.33.03 × 1000 =
  11. 11.45.37 × 100 =
  12. 12.39.07 × 100 =
  13. 13.66.7 ÷ 10 =
  14. 14.371.1 ÷ 1000 =
  15. 15.47.71 ÷ 10 =
  16. 16.21.43 ÷ 1000 =
  17. 17.23.6 × 100 =
  18. 18.31.41 × 10 =
  19. 19.426.8 ÷ 100 =
  20. 20.405.9 × 100 =
  21. 21.0.35 ÷ 100 =
  22. 22.2.59 ÷ 100 =
  23. 23.353.1 × 10 =
  24. 24.368.6 × 100 =
  25. 25.8.71 ÷ 10 =
  26. 26.18.36 × 10 =
  27. 27.45.41 × 100 =
  28. 28.11.68 × 10 =
  29. 29.371.4 × 10 =
  30. 30.173.5 × 10 =
  31. 31.1.39 × 1000 =
  32. 32.39.08 ÷ 1000 =
  33. 33.150.1 ÷ 100 =
  34. 34.6.3 × 100 =
  35. 35.40.87 × 10 =
  36. 36.11.09 × 1000 =
  37. 37.162.1 × 1000 =
  38. 38.375.6 × 10 =
  39. 39.458.1 × 100 =
  40. 40.406.3 ÷ 100 =

Answer key

  1. 460.8
  2. 46.88
  3. 42.01
  4. 3.853
  5. 2909
  6. 2.922
  7. 79.4
  8. 75.1
  9. 3637
  10. 33030
  11. 4537
  12. 3907
  13. 6.67
  14. 0.3711
  15. 4.771
  16. 0.02143
  17. 2360
  18. 314.1
  19. 4.268
  20. 40590
  21. 0.0035
  22. 0.0259
  23. 3531
  24. 36860
  25. 0.871
  26. 183.6
  27. 4541
  28. 116.8
  29. 3714
  30. 1735
  31. 1390
  32. 0.03908
  33. 1.501
  34. 630
  35. 408.7
  36. 11090
  37. 162100
  38. 3756
  39. 45810
  40. 4.063

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