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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 551 · 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. 1.231.9 × 100 =
  2. 2.11.61 × 10 =
  3. 3.11.59 ÷ 1000 =
  4. 4.48.24 × 10 =
  5. 5.122.1 × 1000 =
  6. 6.35.09 ÷ 10 =
  7. 7.109.4 × 10 =
  8. 8.23.08 ÷ 1000 =
  9. 9.204.1 × 10 =
  10. 10.11.42 ÷ 10 =
  11. 11.32.49 ÷ 10 =
  12. 12.196.1 × 10 =
  13. 13.40.54 × 100 =
  14. 14.299.7 × 1000 =
  15. 15.16.99 × 1000 =
  16. 16.234.8 × 1000 =
  17. 17.27.66 × 1000 =
  18. 18.214.4 ÷ 100 =
  19. 19.49.89 ÷ 100 =
  20. 20.325.4 × 10 =
  21. 21.38.46 ÷ 100 =
  22. 22.33.24 × 10 =
  23. 23.40.11 × 10 =
  24. 24.43.1 ÷ 10 =
  25. 25.377.9 × 100 =
  26. 26.316.6 ÷ 10 =
  27. 27.70.5 ÷ 10 =
  28. 28.43.64 ÷ 100 =
  29. 29.138.5 × 100 =
  30. 30.100.4 ÷ 10 =
  31. 31.170.4 ÷ 100 =
  32. 32.91.8 × 10 =
  33. 33.229.9 × 100 =
  34. 34.297.9 × 100 =
  35. 35.191.6 × 10 =
  36. 36.26.8 ÷ 10 =
  37. 37.37.38 × 10 =
  38. 38.43.51 × 10 =
  39. 39.13.14 ÷ 10 =
  40. 40.105.2 ÷ 100 =

Answer key

  1. 23190
  2. 116.1
  3. 0.01159
  4. 482.4
  5. 122100
  6. 3.509
  7. 1094
  8. 0.02308
  9. 2041
  10. 1.142
  11. 3.249
  12. 1961
  13. 4054
  14. 299700
  15. 16990
  16. 234800
  17. 27660
  18. 2.144
  19. 0.4989
  20. 3254
  21. 0.3846
  22. 332.4
  23. 401.1
  24. 4.31
  25. 37790
  26. 31.66
  27. 7.05
  28. 0.4364
  29. 13850
  30. 10.04
  31. 1.704
  32. 918
  33. 22990
  34. 29790
  35. 1916
  36. 2.68
  37. 373.8
  38. 435.1
  39. 1.314
  40. 1.052

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