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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 767 · 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. 1.238.2 × 100 =
  2. 2.222.6 × 100 =
  3. 3.17.01 ÷ 1000 =
  4. 4.12.21 × 100 =
  5. 5.15.91 × 100 =
  6. 6.7.72 × 10 =
  7. 7.22.35 × 10 =
  8. 8.499.9 ÷ 10 =
  9. 9.20.38 × 100 =
  10. 10.405.8 × 1000 =
  11. 11.159.9 × 10 =
  12. 12.36.51 ÷ 10 =
  13. 13.35.81 × 100 =
  14. 14.15.84 ÷ 10 =
  15. 15.111.5 ÷ 10 =
  16. 16.142.7 × 10 =
  17. 17.398.7 × 10 =
  18. 18.48.84 × 100 =
  19. 19.29.51 ÷ 100 =
  20. 20.134.1 ÷ 100 =
  21. 21.367.8 ÷ 1000 =
  22. 22.96.3 ÷ 10 =
  23. 23.35.99 ÷ 10 =
  24. 24.398.5 × 100 =
  25. 25.267.2 × 10 =
  26. 26.14.9 × 1000 =
  27. 27.229.1 × 10 =
  28. 28.47.88 ÷ 100 =
  29. 29.118.4 × 100 =
  30. 30.42.62 × 1000 =
  31. 31.225.6 × 1000 =
  32. 32.42.25 ÷ 10 =
  33. 33.38.16 × 100 =
  34. 34.43.53 × 10 =
  35. 35.6.75 × 10 =
  36. 36.34.82 × 100 =
  37. 37.54.4 ÷ 100 =
  38. 38.294.4 ÷ 10 =
  39. 39.67.1 ÷ 10 =
  40. 40.296.6 ÷ 100 =

Answer key

  1. 23820
  2. 22260
  3. 0.01701
  4. 1221
  5. 1591
  6. 77.2
  7. 223.5
  8. 49.99
  9. 2038
  10. 405800
  11. 1599
  12. 3.651
  13. 3581
  14. 1.584
  15. 11.15
  16. 1427
  17. 3987
  18. 4884
  19. 0.2951
  20. 1.341
  21. 0.3678
  22. 9.63
  23. 3.599
  24. 39850
  25. 2672
  26. 14900
  27. 2291
  28. 0.4788
  29. 11840
  30. 42620
  31. 225600
  32. 4.225
  33. 3816
  34. 435.3
  35. 67.5
  36. 3482
  37. 0.544
  38. 29.44
  39. 6.71
  40. 2.966

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