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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 129 · 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. 1.41.33 ÷ 10 =
  2. 2.358.5 × 10 =
  3. 3.66.4 ÷ 10 =
  4. 4.218.2 ÷ 10 =
  5. 5.78.4 ÷ 10 =
  6. 6.34.46 ÷ 100 =
  7. 7.448.2 × 100 =
  8. 8.31.81 × 1000 =
  9. 9.26.89 ÷ 100 =
  10. 10.34.45 ÷ 1000 =
  11. 11.29.95 × 10 =
  12. 12.66.5 × 1000 =
  13. 13.28.49 × 10 =
  14. 14.212.3 × 10 =
  15. 15.110.8 × 10 =
  16. 16.400.7 × 1000 =
  17. 17.489.8 ÷ 100 =
  18. 18.30.82 × 1000 =
  19. 19.22.22 ÷ 100 =
  20. 20.48.56 ÷ 100 =
  21. 21.269.3 ÷ 10 =
  22. 22.35.61 × 100 =
  23. 23.58.1 × 10 =
  24. 24.284.3 × 1000 =
  25. 25.476.6 × 10 =
  26. 26.40.7 × 10 =
  27. 27.21.06 ÷ 1000 =
  28. 28.33.93 × 100 =
  29. 29.322.1 × 10 =
  30. 30.161.8 × 1000 =
  31. 31.397.8 ÷ 10 =
  32. 32.0.56 ÷ 100 =
  33. 33.24.1 × 10 =
  34. 34.171.5 ÷ 1000 =
  35. 35.3.03 ÷ 1000 =
  36. 36.22.78 × 10 =
  37. 37.46.78 × 1000 =
  38. 38.494.7 ÷ 10 =
  39. 39.146.6 × 100 =
  40. 40.290.3 ÷ 1000 =

Answer key

  1. 4.133
  2. 3585
  3. 6.64
  4. 21.82
  5. 7.84
  6. 0.3446
  7. 44820
  8. 31810
  9. 0.2689
  10. 0.03445
  11. 299.5
  12. 66500
  13. 284.9
  14. 2123
  15. 1108
  16. 400700
  17. 4.898
  18. 30820
  19. 0.2222
  20. 0.4856
  21. 26.93
  22. 3561
  23. 581
  24. 284300
  25. 4766
  26. 407
  27. 0.02106
  28. 3393
  29. 3221
  30. 161800
  31. 39.78
  32. 0.0056
  33. 241
  34. 0.1715
  35. 0.00303
  36. 227.8
  37. 46780
  38. 49.47
  39. 14660
  40. 0.2903

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