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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 999 · 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. 1.49.51 × 1000 =
  2. 2.27.58 × 10 =
  3. 3.45.21 ÷ 10 =
  4. 4.242.3 × 100 =
  5. 5.496.7 ÷ 100 =
  6. 6.32.35 × 1000 =
  7. 7.192.8 ÷ 1000 =
  8. 8.10.11 ÷ 10 =
  9. 9.37.57 × 100 =
  10. 10.6.61 × 10 =
  11. 11.360.8 × 1000 =
  12. 12.50.6 × 10 =
  13. 13.350.9 ÷ 1000 =
  14. 14.22.65 × 10 =
  15. 15.44.7 × 10 =
  16. 16.35.83 × 10 =
  17. 17.365.5 × 1000 =
  18. 18.492.2 ÷ 100 =
  19. 19.81.8 ÷ 1000 =
  20. 20.25.26 × 1000 =
  21. 21.153.7 × 1000 =
  22. 22.281.2 ÷ 100 =
  23. 23.6.89 × 1000 =
  24. 24.21.36 ÷ 100 =
  25. 25.227.7 ÷ 10 =
  26. 26.274.3 ÷ 1000 =
  27. 27.20.48 × 10 =
  28. 28.58.8 × 1000 =
  29. 29.9.16 × 10 =
  30. 30.35.41 ÷ 1000 =
  31. 31.16.71 ÷ 10 =
  32. 32.18.2 ÷ 1000 =
  33. 33.97.3 × 100 =
  34. 34.22.4 × 10 =
  35. 35.42.67 × 1000 =
  36. 36.270.8 ÷ 1000 =
  37. 37.426.4 × 10 =
  38. 38.118.2 × 10 =
  39. 39.175.9 × 10 =
  40. 40.66.9 × 10 =

Answer key

  1. 49510
  2. 275.8
  3. 4.521
  4. 24230
  5. 4.967
  6. 32350
  7. 0.1928
  8. 1.011
  9. 3757
  10. 66.1
  11. 360800
  12. 506
  13. 0.3509
  14. 226.5
  15. 447
  16. 358.3
  17. 365500
  18. 4.922
  19. 0.0818
  20. 25260
  21. 153700
  22. 2.812
  23. 6890
  24. 0.2136
  25. 22.77
  26. 0.2743
  27. 204.8
  28. 58800
  29. 91.6
  30. 0.03541
  31. 1.671
  32. 0.0182
  33. 9730
  34. 224
  35. 42670
  36. 0.2708
  37. 4264
  38. 1182
  39. 1759
  40. 669

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