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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 593 · 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. 1.276.1 × 100 =
  2. 2.27.71 × 100 =
  3. 3.293.6 × 1000 =
  4. 4.2.61 × 1000 =
  5. 5.5.1 × 100 =
  6. 6.360.1 × 100 =
  7. 7.41.51 ÷ 1000 =
  8. 8.12.42 × 10 =
  9. 9.64.1 × 100 =
  10. 10.161.2 × 10 =
  11. 11.5.8 × 10 =
  12. 12.72.8 × 100 =
  13. 13.191.1 ÷ 100 =
  14. 14.36.46 × 10 =
  15. 15.8.6 × 100 =
  16. 16.39.52 ÷ 10 =
  17. 17.68.2 × 1000 =
  18. 18.403.3 ÷ 1000 =
  19. 19.39.91 ÷ 1000 =
  20. 20.33.44 ÷ 100 =
  21. 21.66.4 ÷ 100 =
  22. 22.83.7 × 10 =
  23. 23.287.5 ÷ 10 =
  24. 24.107.9 ÷ 100 =
  25. 25.67.2 ÷ 1000 =
  26. 26.463.6 × 100 =
  27. 27.35.5 ÷ 100 =
  28. 28.39.73 ÷ 1000 =
  29. 29.31.81 ÷ 10 =
  30. 30.155.1 × 1000 =
  31. 31.461.2 × 1000 =
  32. 32.412.2 ÷ 10 =
  33. 33.144.4 ÷ 1000 =
  34. 34.333.7 × 10 =
  35. 35.115.4 × 1000 =
  36. 36.122.9 × 100 =
  37. 37.34.36 × 1000 =
  38. 38.3.87 × 1000 =
  39. 39.482.3 × 100 =
  40. 40.426.4 × 10 =

Answer key

  1. 27610
  2. 2771
  3. 293600
  4. 2610
  5. 510
  6. 36010
  7. 0.04151
  8. 124.2
  9. 6410
  10. 1612
  11. 58
  12. 7280
  13. 1.911
  14. 364.6
  15. 860
  16. 3.952
  17. 68200
  18. 0.4033
  19. 0.03991
  20. 0.3344
  21. 0.664
  22. 837
  23. 28.75
  24. 1.079
  25. 0.0672
  26. 46360
  27. 0.355
  28. 0.03973
  29. 3.181
  30. 155100
  31. 461200
  32. 41.22
  33. 0.1444
  34. 3337
  35. 115400
  36. 12290
  37. 34360
  38. 3870
  39. 48230
  40. 4264

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