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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 228 · 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. 1.222.1 × 1000 =
  2. 2.6.05 × 10 =
  3. 3.283.7 ÷ 10 =
  4. 4.438.6 ÷ 10 =
  5. 5.497.8 ÷ 100 =
  6. 6.10.11 × 10 =
  7. 7.9.73 ÷ 10 =
  8. 8.453.8 ÷ 100 =
  9. 9.31.41 ÷ 1000 =
  10. 10.42.96 × 10 =
  11. 11.293.2 × 10 =
  12. 12.100.2 ÷ 100 =
  13. 13.313.2 ÷ 1000 =
  14. 14.22.46 × 10 =
  15. 15.31.1 × 100 =
  16. 16.29.62 ÷ 100 =
  17. 17.31.45 ÷ 1000 =
  18. 18.28.48 ÷ 10 =
  19. 19.1.94 ÷ 1000 =
  20. 20.480.1 ÷ 10 =
  21. 21.336.7 × 10 =
  22. 22.256.6 ÷ 1000 =
  23. 23.10.45 ÷ 1000 =
  24. 24.156.2 ÷ 10 =
  25. 25.4.78 ÷ 1000 =
  26. 26.25.18 ÷ 10 =
  27. 27.30.45 ÷ 1000 =
  28. 28.5.76 ÷ 100 =
  29. 29.338.6 × 1000 =
  30. 30.29.84 × 1000 =
  31. 31.29.18 ÷ 100 =
  32. 32.3.66 ÷ 10 =
  33. 33.86.8 ÷ 10 =
  34. 34.338.2 × 1000 =
  35. 35.87.8 × 10 =
  36. 36.45.63 × 1000 =
  37. 37.118.1 ÷ 100 =
  38. 38.46.41 × 1000 =
  39. 39.131.5 ÷ 100 =
  40. 40.49.11 ÷ 10 =

Answer key

  1. 222100
  2. 60.5
  3. 28.37
  4. 43.86
  5. 4.978
  6. 101.1
  7. 0.973
  8. 4.538
  9. 0.03141
  10. 429.6
  11. 2932
  12. 1.002
  13. 0.3132
  14. 224.6
  15. 3110
  16. 0.2962
  17. 0.03145
  18. 2.848
  19. 0.00194
  20. 48.01
  21. 3367
  22. 0.2566
  23. 0.01045
  24. 15.62
  25. 0.00478
  26. 2.518
  27. 0.03045
  28. 0.0576
  29. 338600
  30. 29840
  31. 0.2918
  32. 0.366
  33. 8.68
  34. 338200
  35. 878
  36. 45630
  37. 1.181
  38. 46410
  39. 1.315
  40. 4.911

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