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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 878 · 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. 1.266.7 × 10 =
  2. 2.128.3 ÷ 10 =
  3. 3.3.51 × 100 =
  4. 4.4.4 × 10 =
  5. 5.5.05 ÷ 10 =
  6. 6.18.89 × 100 =
  7. 7.29.1 ÷ 1000 =
  8. 8.211.9 × 1000 =
  9. 9.11.26 × 1000 =
  10. 10.27.95 ÷ 100 =
  11. 11.12.21 × 100 =
  12. 12.180.8 ÷ 100 =
  13. 13.147.8 ÷ 100 =
  14. 14.52.9 ÷ 100 =
  15. 15.31.17 × 100 =
  16. 16.26.68 × 100 =
  17. 17.249.3 ÷ 1000 =
  18. 18.34.11 ÷ 1000 =
  19. 19.28.21 × 10 =
  20. 20.6.74 ÷ 100 =
  21. 21.32.39 ÷ 1000 =
  22. 22.38.01 ÷ 10 =
  23. 23.112.1 × 100 =
  24. 24.17.69 ÷ 100 =
  25. 25.468.4 × 100 =
  26. 26.31.84 ÷ 10 =
  27. 27.73.7 × 100 =
  28. 28.381.5 ÷ 10 =
  29. 29.14.93 × 10 =
  30. 30.40.19 × 10 =
  31. 31.46.51 ÷ 100 =
  32. 32.27.57 × 1000 =
  33. 33.11.38 ÷ 100 =
  34. 34.17.53 ÷ 10 =
  35. 35.108.5 ÷ 1000 =
  36. 36.440.7 ÷ 10 =
  37. 37.291.6 ÷ 10 =
  38. 38.69.8 ÷ 100 =
  39. 39.373.7 ÷ 100 =
  40. 40.86.3 ÷ 1000 =

Answer key

  1. 2667
  2. 12.83
  3. 351
  4. 44
  5. 0.505
  6. 1889
  7. 0.0291
  8. 211900
  9. 11260
  10. 0.2795
  11. 1221
  12. 1.808
  13. 1.478
  14. 0.529
  15. 3117
  16. 2668
  17. 0.2493
  18. 0.03411
  19. 282.1
  20. 0.0674
  21. 0.03239
  22. 3.801
  23. 11210
  24. 0.1769
  25. 46840
  26. 3.184
  27. 7370
  28. 38.15
  29. 149.3
  30. 401.9
  31. 0.4651
  32. 27570
  33. 0.1138
  34. 1.753
  35. 0.1085
  36. 44.07
  37. 29.16
  38. 0.698
  39. 3.737
  40. 0.0863

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