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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 679 · 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. 1.86.3 ÷ 10 =
  2. 2.1.79 × 1000 =
  3. 3.40.2 ÷ 1000 =
  4. 4.393.2 × 1000 =
  5. 5.18.09 × 1000 =
  6. 6.22.8 × 10 =
  7. 7.197.5 ÷ 1000 =
  8. 8.383.1 ÷ 10 =
  9. 9.105.7 × 100 =
  10. 10.46.44 × 100 =
  11. 11.412.1 ÷ 100 =
  12. 12.372.1 ÷ 10 =
  13. 13.6.05 ÷ 100 =
  14. 14.115.8 × 10 =
  15. 15.1.38 × 10 =
  16. 16.25.84 × 1000 =
  17. 17.324.8 × 1000 =
  18. 18.16.51 ÷ 1000 =
  19. 19.24.91 ÷ 100 =
  20. 20.378.4 ÷ 100 =
  21. 21.291.1 × 10 =
  22. 22.32.21 ÷ 10 =
  23. 23.46.69 ÷ 10 =
  24. 24.14.59 ÷ 100 =
  25. 25.11.22 ÷ 10 =
  26. 26.32.83 ÷ 10 =
  27. 27.482.8 × 10 =
  28. 28.40.03 × 10 =
  29. 29.24.93 × 10 =
  30. 30.382.9 × 10 =
  31. 31.62.5 ÷ 10 =
  32. 32.461.4 ÷ 1000 =
  33. 33.41.43 ÷ 10 =
  34. 34.1.68 ÷ 100 =
  35. 35.195.1 ÷ 100 =
  36. 36.42.65 × 10 =
  37. 37.187.4 × 100 =
  38. 38.29.38 × 10 =
  39. 39.66.1 × 10 =
  40. 40.24.21 ÷ 1000 =

Answer key

  1. 8.63
  2. 1790
  3. 0.0402
  4. 393200
  5. 18090
  6. 228
  7. 0.1975
  8. 38.31
  9. 10570
  10. 4644
  11. 4.121
  12. 37.21
  13. 0.0605
  14. 1158
  15. 13.8
  16. 25840
  17. 324800
  18. 0.01651
  19. 0.2491
  20. 3.784
  21. 2911
  22. 3.221
  23. 4.669
  24. 0.1459
  25. 1.122
  26. 3.283
  27. 4828
  28. 400.3
  29. 249.3
  30. 3829
  31. 6.25
  32. 0.4614
  33. 4.143
  34. 0.0168
  35. 1.951
  36. 426.5
  37. 18740
  38. 293.8
  39. 661
  40. 0.02421

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