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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 541 · 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. 1.83.2 × 10 =
  2. 2.458.8 ÷ 10 =
  3. 3.49.73 × 100 =
  4. 4.40.44 × 100 =
  5. 5.46.84 ÷ 1000 =
  6. 6.341.3 ÷ 100 =
  7. 7.28.32 × 10 =
  8. 8.41.1 × 100 =
  9. 9.30.05 × 1000 =
  10. 10.224.4 × 100 =
  11. 11.159.8 ÷ 1000 =
  12. 12.258.1 ÷ 100 =
  13. 13.30.09 × 10 =
  14. 14.32.59 ÷ 100 =
  15. 15.389.1 ÷ 100 =
  16. 16.10.22 × 1000 =
  17. 17.131.9 × 100 =
  18. 18.386.4 ÷ 100 =
  19. 19.87.4 × 10 =
  20. 20.445.3 ÷ 10 =
  21. 21.44.7 ÷ 100 =
  22. 22.350.1 × 10 =
  23. 23.36.49 ÷ 1000 =
  24. 24.351.7 ÷ 10 =
  25. 25.321.5 × 100 =
  26. 26.436.1 × 1000 =
  27. 27.32.67 ÷ 100 =
  28. 28.304.7 ÷ 10 =
  29. 29.197.8 ÷ 1000 =
  30. 30.154.1 × 100 =
  31. 31.198.3 ÷ 1000 =
  32. 32.246.1 ÷ 100 =
  33. 33.184.7 × 1000 =
  34. 34.19.3 ÷ 10 =
  35. 35.5.21 × 100 =
  36. 36.33.5 × 1000 =
  37. 37.360.3 × 100 =
  38. 38.3.26 × 1000 =
  39. 39.425.4 ÷ 10 =
  40. 40.116.1 × 100 =

Answer key

  1. 832
  2. 45.88
  3. 4973
  4. 4044
  5. 0.04684
  6. 3.413
  7. 283.2
  8. 4110
  9. 30050
  10. 22440
  11. 0.1598
  12. 2.581
  13. 300.9
  14. 0.3259
  15. 3.891
  16. 10220
  17. 13190
  18. 3.864
  19. 874
  20. 44.53
  21. 0.447
  22. 3501
  23. 0.03649
  24. 35.17
  25. 32150
  26. 436100
  27. 0.3267
  28. 30.47
  29. 0.1978
  30. 15410
  31. 0.1983
  32. 2.461
  33. 184700
  34. 1.93
  35. 521
  36. 33500
  37. 36030
  38. 3260
  39. 42.54
  40. 11610

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