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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 265 · 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. 1.19.13 × 10 =
  2. 2.14.77 × 100 =
  3. 3.425.4 ÷ 10 =
  4. 4.31.14 × 1000 =
  5. 5.46.59 × 1000 =
  6. 6.15.59 ÷ 10 =
  7. 7.477.2 × 1000 =
  8. 8.469.3 × 1000 =
  9. 9.28.74 × 100 =
  10. 10.20.1 × 10 =
  11. 11.2.99 ÷ 10 =
  12. 12.365.3 × 10 =
  13. 13.71.4 ÷ 100 =
  14. 14.4.07 × 10 =
  15. 15.15.73 × 1000 =
  16. 16.25.47 ÷ 100 =
  17. 17.33.1 ÷ 10 =
  18. 18.413.3 ÷ 100 =
  19. 19.38.5 × 10 =
  20. 20.90.8 × 10 =
  21. 21.85.1 ÷ 10 =
  22. 22.31.83 × 10 =
  23. 23.15.5 ÷ 10 =
  24. 24.26.55 ÷ 10 =
  25. 25.31.19 × 10 =
  26. 26.5.24 × 100 =
  27. 27.70.7 × 1000 =
  28. 28.468.9 × 10 =
  29. 29.7.29 × 1000 =
  30. 30.22.01 ÷ 100 =
  31. 31.25.44 ÷ 1000 =
  32. 32.71.8 × 1000 =
  33. 33.4.19 × 1000 =
  34. 34.10.13 × 1000 =
  35. 35.6.28 × 1000 =
  36. 36.313.1 ÷ 1000 =
  37. 37.7.82 × 1000 =
  38. 38.101.8 × 1000 =
  39. 39.199.3 ÷ 10 =
  40. 40.4.61 ÷ 100 =

Answer key

  1. 191.3
  2. 1477
  3. 42.54
  4. 31140
  5. 46590
  6. 1.559
  7. 477200
  8. 469300
  9. 2874
  10. 201
  11. 0.299
  12. 3653
  13. 0.714
  14. 40.7
  15. 15730
  16. 0.2547
  17. 3.31
  18. 4.133
  19. 385
  20. 908
  21. 8.51
  22. 318.3
  23. 1.55
  24. 2.655
  25. 311.9
  26. 524
  27. 70700
  28. 4689
  29. 7290
  30. 0.2201
  31. 0.02544
  32. 71800
  33. 4190
  34. 10130
  35. 6280
  36. 0.3131
  37. 7820
  38. 101800
  39. 19.93
  40. 0.0461

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