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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 58 · 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. 1.172.1 ÷ 10 =
  2. 2.424.6 × 100 =
  3. 3.40.28 × 100 =
  4. 4.176.9 ÷ 100 =
  5. 5.335.1 × 10 =
  6. 6.32.15 × 10 =
  7. 7.4.6 ÷ 10 =
  8. 8.353.3 × 100 =
  9. 9.31.1 × 10 =
  10. 10.10.14 ÷ 100 =
  11. 11.98.4 × 10 =
  12. 12.8.01 ÷ 100 =
  13. 13.193.5 ÷ 100 =
  14. 14.8.62 × 1000 =
  15. 15.362.4 ÷ 100 =
  16. 16.112.8 × 1000 =
  17. 17.378.3 × 10 =
  18. 18.61.4 ÷ 10 =
  19. 19.132.4 × 100 =
  20. 20.302.5 ÷ 1000 =
  21. 21.31.7 × 10 =
  22. 22.225.4 × 10 =
  23. 23.383.6 ÷ 1000 =
  24. 24.471.4 ÷ 1000 =
  25. 25.22.74 × 1000 =
  26. 26.286.1 × 10 =
  27. 27.363.7 × 10 =
  28. 28.118.1 ÷ 10 =
  29. 29.41.58 × 10 =
  30. 30.104.2 ÷ 10 =
  31. 31.446.8 × 10 =
  32. 32.19.26 ÷ 10 =
  33. 33.336.5 ÷ 1000 =
  34. 34.9.93 × 1000 =
  35. 35.76.5 ÷ 10 =
  36. 36.397.9 ÷ 1000 =
  37. 37.198.6 × 100 =
  38. 38.44.41 ÷ 10 =
  39. 39.27.34 ÷ 10 =
  40. 40.146.8 × 10 =

Answer key

  1. 17.21
  2. 42460
  3. 4028
  4. 1.769
  5. 3351
  6. 321.5
  7. 0.46
  8. 35330
  9. 311
  10. 0.1014
  11. 984
  12. 0.0801
  13. 1.935
  14. 8620
  15. 3.624
  16. 112800
  17. 3783
  18. 6.14
  19. 13240
  20. 0.3025
  21. 317
  22. 2254
  23. 0.3836
  24. 0.4714
  25. 22740
  26. 2861
  27. 3637
  28. 11.81
  29. 415.8
  30. 10.42
  31. 4468
  32. 1.926
  33. 0.3365
  34. 9930
  35. 7.65
  36. 0.3979
  37. 19860
  38. 4.441
  39. 2.734
  40. 1468

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