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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 113 · 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. 1.389.3 × 1000 =
  2. 2.458.8 × 10 =
  3. 3.18.76 × 100 =
  4. 4.40.65 × 10 =
  5. 5.21.55 ÷ 100 =
  6. 6.361.1 × 10 =
  7. 7.47.12 × 10 =
  8. 8.32.11 ÷ 100 =
  9. 9.385.3 × 10 =
  10. 10.21.1 ÷ 100 =
  11. 11.9.49 × 100 =
  12. 12.36.41 × 10 =
  13. 13.297.5 ÷ 1000 =
  14. 14.47.97 × 10 =
  15. 15.285.9 ÷ 100 =
  16. 16.424.8 × 10 =
  17. 17.187.6 × 10 =
  18. 18.455.8 ÷ 1000 =
  19. 19.74.8 × 10 =
  20. 20.75.6 × 10 =
  21. 21.260.9 ÷ 10 =
  22. 22.37.3 ÷ 1000 =
  23. 23.327.1 ÷ 1000 =
  24. 24.411.6 × 1000 =
  25. 25.40.08 × 100 =
  26. 26.441.3 ÷ 100 =
  27. 27.40.47 × 10 =
  28. 28.312.8 × 100 =
  29. 29.18.58 × 10 =
  30. 30.483.1 × 10 =
  31. 31.362.8 ÷ 1000 =
  32. 32.1.72 ÷ 10 =
  33. 33.437.2 × 100 =
  34. 34.366.3 × 1000 =
  35. 35.10.1 × 100 =
  36. 36.223.1 ÷ 100 =
  37. 37.29.47 ÷ 1000 =
  38. 38.446.7 × 100 =
  39. 39.48.04 ÷ 1000 =
  40. 40.42.57 × 1000 =

Answer key

  1. 389300
  2. 4588
  3. 1876
  4. 406.5
  5. 0.2155
  6. 3611
  7. 471.2
  8. 0.3211
  9. 3853
  10. 0.211
  11. 949
  12. 364.1
  13. 0.2975
  14. 479.7
  15. 2.859
  16. 4248
  17. 1876
  18. 0.4558
  19. 748
  20. 756
  21. 26.09
  22. 0.0373
  23. 0.3271
  24. 411600
  25. 4008
  26. 4.413
  27. 404.7
  28. 31280
  29. 185.8
  30. 4831
  31. 0.3628
  32. 0.172
  33. 43720
  34. 366300
  35. 1010
  36. 2.231
  37. 0.02947
  38. 44670
  39. 0.04804
  40. 42570

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