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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 908 · 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. 1.97.9 ÷ 1000 =
  2. 2.8.27 × 100 =
  3. 3.370.2 × 10 =
  4. 4.17.87 × 1000 =
  5. 5.105.7 ÷ 100 =
  6. 6.48.01 × 100 =
  7. 7.445.9 ÷ 100 =
  8. 8.53.3 ÷ 1000 =
  9. 9.47.18 ÷ 100 =
  10. 10.468.9 × 1000 =
  11. 11.355.7 × 100 =
  12. 12.101.3 ÷ 100 =
  13. 13.227.1 × 100 =
  14. 14.39.22 ÷ 10 =
  15. 15.218.2 ÷ 10 =
  16. 16.10.99 × 100 =
  17. 17.365.4 × 1000 =
  18. 18.350.8 × 1000 =
  19. 19.47.78 ÷ 1000 =
  20. 20.9.92 × 100 =
  21. 21.24.22 × 10 =
  22. 22.3.67 ÷ 10 =
  23. 23.2.64 ÷ 1000 =
  24. 24.13.78 ÷ 10 =
  25. 25.19.76 ÷ 10 =
  26. 26.22.27 × 100 =
  27. 27.128.5 × 100 =
  28. 28.18.53 × 100 =
  29. 29.227.9 ÷ 10 =
  30. 30.33.34 × 100 =
  31. 31.44.74 × 10 =
  32. 32.179.9 × 1000 =
  33. 33.83.1 × 100 =
  34. 34.37.72 × 1000 =
  35. 35.128.9 ÷ 1000 =
  36. 36.1.84 ÷ 100 =
  37. 37.59.2 × 10 =
  38. 38.31.05 × 1000 =
  39. 39.37.61 ÷ 1000 =
  40. 40.258.6 × 100 =

Answer key

  1. 0.0979
  2. 827
  3. 3702
  4. 17870
  5. 1.057
  6. 4801
  7. 4.459
  8. 0.0533
  9. 0.4718
  10. 468900
  11. 35570
  12. 1.013
  13. 22710
  14. 3.922
  15. 21.82
  16. 1099
  17. 365400
  18. 350800
  19. 0.04778
  20. 992
  21. 242.2
  22. 0.367
  23. 0.00264
  24. 1.378
  25. 1.976
  26. 2227
  27. 12850
  28. 1853
  29. 22.79
  30. 3334
  31. 447.4
  32. 179900
  33. 8310
  34. 37720
  35. 0.1289
  36. 0.0184
  37. 592
  38. 31050
  39. 0.03761
  40. 25860

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