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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 960 · 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. 1.20.94 ÷ 10 =
  2. 2.273.4 ÷ 100 =
  3. 3.76.5 ÷ 100 =
  4. 4.493.5 × 100 =
  5. 5.25.67 ÷ 1000 =
  6. 6.369.3 × 1000 =
  7. 7.306.1 ÷ 10 =
  8. 8.9.32 ÷ 1000 =
  9. 9.22.77 × 1000 =
  10. 10.7.13 ÷ 1000 =
  11. 11.29.48 × 1000 =
  12. 12.23.1 ÷ 10 =
  13. 13.332.9 × 10 =
  14. 14.420.4 × 1000 =
  15. 15.7.13 ÷ 1000 =
  16. 16.38.72 × 1000 =
  17. 17.21.1 × 100 =
  18. 18.9.05 × 100 =
  19. 19.17.98 ÷ 100 =
  20. 20.4.86 ÷ 10 =
  21. 21.137.6 × 100 =
  22. 22.176.5 ÷ 100 =
  23. 23.32.91 × 1000 =
  24. 24.181.6 × 1000 =
  25. 25.3.89 ÷ 10 =
  26. 26.5.8 ÷ 10 =
  27. 27.161.8 × 100 =
  28. 28.289.8 × 1000 =
  29. 29.3.67 × 10 =
  30. 30.116.6 × 1000 =
  31. 31.482.4 ÷ 100 =
  32. 32.0.32 × 100 =
  33. 33.31.86 ÷ 10 =
  34. 34.23.8 × 10 =
  35. 35.44.73 ÷ 100 =
  36. 36.245.1 × 10 =
  37. 37.30.31 × 100 =
  38. 38.44.19 × 10 =
  39. 39.272.1 × 10 =
  40. 40.30.08 ÷ 10 =

Answer key

  1. 2.094
  2. 2.734
  3. 0.765
  4. 49350
  5. 0.02567
  6. 369300
  7. 30.61
  8. 0.00932
  9. 22770
  10. 0.00713
  11. 29480
  12. 2.31
  13. 3329
  14. 420400
  15. 0.00713
  16. 38720
  17. 2110
  18. 905
  19. 0.1798
  20. 0.486
  21. 13760
  22. 1.765
  23. 32910
  24. 181600
  25. 0.389
  26. 0.58
  27. 16180
  28. 289800
  29. 36.7
  30. 116600
  31. 4.824
  32. 32
  33. 3.186
  34. 238
  35. 0.4473
  36. 2451
  37. 3031
  38. 441.9
  39. 2721
  40. 3.008

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