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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 832 · 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. 1.16.42 × 10 =
  2. 2.5.56 × 10 =
  3. 3.130.8 × 100 =
  4. 4.146.2 × 1000 =
  5. 5.464.1 × 1000 =
  6. 6.48.77 ÷ 10 =
  7. 7.135.2 × 1000 =
  8. 8.30.61 ÷ 10 =
  9. 9.20.61 ÷ 100 =
  10. 10.21.11 × 100 =
  11. 11.7.51 ÷ 100 =
  12. 12.89.1 ÷ 100 =
  13. 13.9.8 ÷ 1000 =
  14. 14.69.6 ÷ 1000 =
  15. 15.378.3 ÷ 1000 =
  16. 16.46.08 ÷ 10 =
  17. 17.491.1 × 10 =
  18. 18.27.52 × 1000 =
  19. 19.360.3 ÷ 10 =
  20. 20.240.9 ÷ 1000 =
  21. 21.32.49 ÷ 100 =
  22. 22.499.1 × 10 =
  23. 23.282.8 × 1000 =
  24. 24.432.2 × 100 =
  25. 25.109.6 × 10 =
  26. 26.198.1 ÷ 10 =
  27. 27.60.7 × 1000 =
  28. 28.37.84 × 10 =
  29. 29.435.7 ÷ 10 =
  30. 30.346.7 × 1000 =
  31. 31.19.53 × 100 =
  32. 32.260.4 ÷ 10 =
  33. 33.2.69 ÷ 10 =
  34. 34.45.57 ÷ 10 =
  35. 35.303.1 × 10 =
  36. 36.74.3 × 1000 =
  37. 37.157.1 × 1000 =
  38. 38.41.03 ÷ 1000 =
  39. 39.33.8 ÷ 10 =
  40. 40.31.13 × 100 =

Answer key

  1. 164.2
  2. 55.6
  3. 13080
  4. 146200
  5. 464100
  6. 4.877
  7. 135200
  8. 3.061
  9. 0.2061
  10. 2111
  11. 0.0751
  12. 0.891
  13. 0.0098
  14. 0.0696
  15. 0.3783
  16. 4.608
  17. 4911
  18. 27520
  19. 36.03
  20. 0.2409
  21. 0.3249
  22. 4991
  23. 282800
  24. 43220
  25. 1096
  26. 19.81
  27. 60700
  28. 378.4
  29. 43.57
  30. 346700
  31. 1953
  32. 26.04
  33. 0.269
  34. 4.557
  35. 3031
  36. 74300
  37. 157100
  38. 0.04103
  39. 3.38
  40. 3113

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