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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 7 · 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. 1.47.88 × 10 =
  2. 2.40.37 × 100 =
  3. 3.20.88 × 10 =
  4. 4.19.25 × 100 =
  5. 5.75.1 × 1000 =
  6. 6.23.37 ÷ 1000 =
  7. 7.95.9 × 100 =
  8. 8.17.48 × 1000 =
  9. 9.33.29 × 1000 =
  10. 10.7.59 × 1000 =
  11. 11.367.4 × 1000 =
  12. 12.18.87 ÷ 100 =
  13. 13.38.41 ÷ 100 =
  14. 14.199.4 × 10 =
  15. 15.359.2 × 100 =
  16. 16.5.16 ÷ 1000 =
  17. 17.264.2 × 10 =
  18. 18.185.5 × 1000 =
  19. 19.18.61 × 1000 =
  20. 20.481.4 × 10 =
  21. 21.235.3 × 1000 =
  22. 22.21.68 ÷ 10 =
  23. 23.119.9 × 100 =
  24. 24.20.73 × 1000 =
  25. 25.10.85 ÷ 10 =
  26. 26.12.81 ÷ 1000 =
  27. 27.28.86 × 1000 =
  28. 28.36.29 ÷ 100 =
  29. 29.27.53 × 10 =
  30. 30.94.1 × 1000 =
  31. 31.431.3 ÷ 100 =
  32. 32.435.8 ÷ 1000 =
  33. 33.89.3 × 1000 =
  34. 34.56.3 × 1000 =
  35. 35.368.2 × 100 =
  36. 36.30.72 × 10 =
  37. 37.11.38 ÷ 10 =
  38. 38.42.41 × 10 =
  39. 39.495.3 ÷ 10 =
  40. 40.218.3 × 1000 =

Answer key

  1. 478.8
  2. 4037
  3. 208.8
  4. 1925
  5. 75100
  6. 0.02337
  7. 9590
  8. 17480
  9. 33290
  10. 7590
  11. 367400
  12. 0.1887
  13. 0.3841
  14. 1994
  15. 35920
  16. 0.00516
  17. 2642
  18. 185500
  19. 18610
  20. 4814
  21. 235300
  22. 2.168
  23. 11990
  24. 20730
  25. 1.085
  26. 0.01281
  27. 28860
  28. 0.3629
  29. 275.3
  30. 94100
  31. 4.313
  32. 0.4358
  33. 89300
  34. 56300
  35. 36820
  36. 307.2
  37. 1.138
  38. 424.1
  39. 49.53
  40. 218300

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