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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 112 · 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. 1.394.8 × 10 =
  2. 2.20.8 × 100 =
  3. 3.364.7 ÷ 100 =
  4. 4.27.87 ÷ 100 =
  5. 5.340.3 × 100 =
  6. 6.23.2 ÷ 10 =
  7. 7.21.09 ÷ 1000 =
  8. 8.47.34 × 1000 =
  9. 9.11.65 × 1000 =
  10. 10.46.84 × 10 =
  11. 11.10.8 ÷ 100 =
  12. 12.1.63 × 100 =
  13. 13.30.63 × 1000 =
  14. 14.41.82 × 10 =
  15. 15.25.71 × 100 =
  16. 16.279.1 × 1000 =
  17. 17.405.2 ÷ 100 =
  18. 18.48.8 ÷ 10 =
  19. 19.23.59 × 100 =
  20. 20.411.1 ÷ 1000 =
  21. 21.14.47 ÷ 10 =
  22. 22.40.17 × 10 =
  23. 23.5.07 × 100 =
  24. 24.8.71 × 10 =
  25. 25.33.61 ÷ 100 =
  26. 26.497.1 ÷ 1000 =
  27. 27.197.1 ÷ 10 =
  28. 28.22.31 × 1000 =
  29. 29.29.97 × 100 =
  30. 30.421.3 × 10 =
  31. 31.143.3 ÷ 100 =
  32. 32.12.91 ÷ 10 =
  33. 33.277.5 × 100 =
  34. 34.37.01 ÷ 10 =
  35. 35.1.37 × 10 =
  36. 36.348.4 ÷ 10 =
  37. 37.23.98 × 10 =
  38. 38.69.4 × 10 =
  39. 39.43.75 ÷ 100 =
  40. 40.23.65 × 10 =

Answer key

  1. 3948
  2. 2080
  3. 3.647
  4. 0.2787
  5. 34030
  6. 2.32
  7. 0.02109
  8. 47340
  9. 11650
  10. 468.4
  11. 0.108
  12. 163
  13. 30630
  14. 418.2
  15. 2571
  16. 279100
  17. 4.052
  18. 4.88
  19. 2359
  20. 0.4111
  21. 1.447
  22. 401.7
  23. 507
  24. 87.1
  25. 0.3361
  26. 0.4971
  27. 19.71
  28. 22310
  29. 2997
  30. 4213
  31. 1.433
  32. 1.291
  33. 27750
  34. 3.701
  35. 13.7
  36. 34.84
  37. 239.8
  38. 694
  39. 0.4375
  40. 236.5

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