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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 841 · 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. 1.48.81 ÷ 100 =
  2. 2.95.1 ÷ 10 =
  3. 3.5.26 × 10 =
  4. 4.335.1 ÷ 10 =
  5. 5.34.16 × 10 =
  6. 6.5.29 ÷ 1000 =
  7. 7.4.33 × 10 =
  8. 8.32.88 ÷ 100 =
  9. 9.329.3 ÷ 1000 =
  10. 10.31.23 ÷ 100 =
  11. 11.35.4 ÷ 1000 =
  12. 12.49.46 × 100 =
  13. 13.346.8 × 1000 =
  14. 14.47.28 ÷ 100 =
  15. 15.370.7 × 10 =
  16. 16.23.38 × 10 =
  17. 17.39.53 × 100 =
  18. 18.41.02 ÷ 1000 =
  19. 19.13.25 ÷ 100 =
  20. 20.393.1 ÷ 10 =
  21. 21.387.7 × 10 =
  22. 22.82.4 × 100 =
  23. 23.484.5 ÷ 1000 =
  24. 24.12.23 ÷ 1000 =
  25. 25.97.8 × 1000 =
  26. 26.155.4 ÷ 10 =
  27. 27.28.24 ÷ 1000 =
  28. 28.211.3 × 100 =
  29. 29.189.6 × 10 =
  30. 30.4.28 ÷ 1000 =
  31. 31.132.1 × 1000 =
  32. 32.362.7 ÷ 1000 =
  33. 33.2.54 × 10 =
  34. 34.40.41 × 10 =
  35. 35.47.37 ÷ 10 =
  36. 36.324.1 ÷ 10 =
  37. 37.35.4 × 100 =
  38. 38.108.1 × 1000 =
  39. 39.24.03 ÷ 100 =
  40. 40.20.31 × 10 =

Answer key

  1. 0.4881
  2. 9.51
  3. 52.6
  4. 33.51
  5. 341.6
  6. 0.00529
  7. 43.3
  8. 0.3288
  9. 0.3293
  10. 0.3123
  11. 0.0354
  12. 4946
  13. 346800
  14. 0.4728
  15. 3707
  16. 233.8
  17. 3953
  18. 0.04102
  19. 0.1325
  20. 39.31
  21. 3877
  22. 8240
  23. 0.4845
  24. 0.01223
  25. 97800
  26. 15.54
  27. 0.02824
  28. 21130
  29. 1896
  30. 0.00428
  31. 132100
  32. 0.3627
  33. 25.4
  34. 404.1
  35. 4.737
  36. 32.41
  37. 3540
  38. 108100
  39. 0.2403
  40. 203.1

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