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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 847 · 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. 1.28.71 ÷ 10 =
  2. 2.46.42 ÷ 100 =
  3. 3.112.6 × 1000 =
  4. 4.211.7 ÷ 10 =
  5. 5.160.1 × 1000 =
  6. 6.11.47 × 1000 =
  7. 7.293.4 ÷ 10 =
  8. 8.27.62 × 10 =
  9. 9.410.1 ÷ 10 =
  10. 10.19.81 × 10 =
  11. 11.25.35 ÷ 10 =
  12. 12.166.8 × 100 =
  13. 13.32.65 × 100 =
  14. 14.4.17 × 100 =
  15. 15.3.6 ÷ 100 =
  16. 16.49.41 ÷ 1000 =
  17. 17.36.11 × 1000 =
  18. 18.18.08 × 10 =
  19. 19.38.99 × 1000 =
  20. 20.34.49 ÷ 10 =
  21. 21.64.4 ÷ 1000 =
  22. 22.135.1 ÷ 100 =
  23. 23.186.9 × 10 =
  24. 24.403.1 ÷ 100 =
  25. 25.371.1 ÷ 100 =
  26. 26.30.56 × 1000 =
  27. 27.107.7 ÷ 10 =
  28. 28.63.1 ÷ 100 =
  29. 29.213.7 ÷ 100 =
  30. 30.4.31 ÷ 1000 =
  31. 31.48.17 ÷ 1000 =
  32. 32.370.2 × 100 =
  33. 33.41.79 ÷ 10 =
  34. 34.64.1 ÷ 100 =
  35. 35.29.65 × 10 =
  36. 36.3.31 × 10 =
  37. 37.338.2 ÷ 1000 =
  38. 38.47.08 × 10 =
  39. 39.189.2 × 100 =
  40. 40.83.7 ÷ 1000 =

Answer key

  1. 2.871
  2. 0.4642
  3. 112600
  4. 21.17
  5. 160100
  6. 11470
  7. 29.34
  8. 276.2
  9. 41.01
  10. 198.1
  11. 2.535
  12. 16680
  13. 3265
  14. 417
  15. 0.036
  16. 0.04941
  17. 36110
  18. 180.8
  19. 38990
  20. 3.449
  21. 0.0644
  22. 1.351
  23. 1869
  24. 4.031
  25. 3.711
  26. 30560
  27. 10.77
  28. 0.631
  29. 2.137
  30. 0.00431
  31. 0.04817
  32. 37020
  33. 4.179
  34. 0.641
  35. 296.5
  36. 33.1
  37. 0.3382
  38. 470.8
  39. 18920
  40. 0.0837

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