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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 552 · 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. 1.10.55 ÷ 100 =
  2. 2.42.27 × 100 =
  3. 3.443.8 × 10 =
  4. 4.194.1 × 10 =
  5. 5.12.31 × 10 =
  6. 6.27.87 × 1000 =
  7. 7.405.9 ÷ 10 =
  8. 8.376.2 × 100 =
  9. 9.10.1 × 100 =
  10. 10.17.41 ÷ 10 =
  11. 11.6.3 × 1000 =
  12. 12.322.7 × 1000 =
  13. 13.140.4 × 1000 =
  14. 14.22.44 × 100 =
  15. 15.188.6 ÷ 10 =
  16. 16.389.9 ÷ 100 =
  17. 17.216.6 ÷ 100 =
  18. 18.31.98 × 1000 =
  19. 19.17.31 ÷ 100 =
  20. 20.88.7 ÷ 1000 =
  21. 21.26.97 × 1000 =
  22. 22.341.4 ÷ 10 =
  23. 23.109.6 × 10 =
  24. 24.376.1 ÷ 10 =
  25. 25.281.4 ÷ 10 =
  26. 26.355.5 × 10 =
  27. 27.459.2 ÷ 1000 =
  28. 28.17.31 ÷ 1000 =
  29. 29.10.81 ÷ 1000 =
  30. 30.6.77 × 100 =
  31. 31.1.8 × 1000 =
  32. 32.39.21 ÷ 10 =
  33. 33.37.75 × 100 =
  34. 34.48.27 ÷ 1000 =
  35. 35.4.15 ÷ 10 =
  36. 36.13.05 ÷ 100 =
  37. 37.139.2 ÷ 1000 =
  38. 38.43.06 × 100 =
  39. 39.325.4 × 100 =
  40. 40.28.55 × 10 =

Answer key

  1. 0.1055
  2. 4227
  3. 4438
  4. 1941
  5. 123.1
  6. 27870
  7. 40.59
  8. 37620
  9. 1010
  10. 1.741
  11. 6300
  12. 322700
  13. 140400
  14. 2244
  15. 18.86
  16. 3.899
  17. 2.166
  18. 31980
  19. 0.1731
  20. 0.0887
  21. 26970
  22. 34.14
  23. 1096
  24. 37.61
  25. 28.14
  26. 3555
  27. 0.4592
  28. 0.01731
  29. 0.01081
  30. 677
  31. 1800
  32. 3.921
  33. 3775
  34. 0.04827
  35. 0.415
  36. 0.1305
  37. 0.1392
  38. 4306
  39. 32540
  40. 285.5

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