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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 783 · 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. 1.99.7 ÷ 10 =
  2. 2.29.41 ÷ 100 =
  3. 3.26.3 ÷ 100 =
  4. 4.46.21 × 1000 =
  5. 5.47.17 × 1000 =
  6. 6.82.7 ÷ 10 =
  7. 7.1.84 ÷ 1000 =
  8. 8.34.14 ÷ 1000 =
  9. 9.248.9 ÷ 1000 =
  10. 10.228.1 ÷ 1000 =
  11. 11.42.9 ÷ 100 =
  12. 12.425.4 × 100 =
  13. 13.16.05 × 10 =
  14. 14.171.1 ÷ 10 =
  15. 15.172.5 × 10 =
  16. 16.474.1 × 1000 =
  17. 17.59.1 × 100 =
  18. 18.20.1 × 1000 =
  19. 19.0.78 ÷ 100 =
  20. 20.277.7 × 1000 =
  21. 21.83.3 ÷ 1000 =
  22. 22.29.54 × 10 =
  23. 23.381.7 ÷ 10 =
  24. 24.22.11 ÷ 10 =
  25. 25.2.26 ÷ 1000 =
  26. 26.3.73 × 1000 =
  27. 27.110.2 × 1000 =
  28. 28.78.5 × 10 =
  29. 29.35.95 ÷ 100 =
  30. 30.15.07 ÷ 10 =
  31. 31.29.9 × 10 =
  32. 32.201.7 × 10 =
  33. 33.410.9 × 1000 =
  34. 34.39.9 ÷ 100 =
  35. 35.0.44 × 10 =
  36. 36.16.38 ÷ 1000 =
  37. 37.45.61 ÷ 1000 =
  38. 38.21.3 × 10 =
  39. 39.478.6 × 100 =
  40. 40.79.8 ÷ 100 =

Answer key

  1. 9.97
  2. 0.2941
  3. 0.263
  4. 46210
  5. 47170
  6. 8.27
  7. 0.00184
  8. 0.03414
  9. 0.2489
  10. 0.2281
  11. 0.429
  12. 42540
  13. 160.5
  14. 17.11
  15. 1725
  16. 474100
  17. 5910
  18. 20100
  19. 0.0078
  20. 277700
  21. 0.0833
  22. 295.4
  23. 38.17
  24. 2.211
  25. 0.00226
  26. 3730
  27. 110200
  28. 785
  29. 0.3595
  30. 1.507
  31. 299
  32. 2017
  33. 410900
  34. 0.399
  35. 4.4
  36. 0.01638
  37. 0.04561
  38. 213
  39. 47860
  40. 0.798

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