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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 414 · 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. 1.22.36 ÷ 10 =
  2. 2.37.31 × 100 =
  3. 3.33.68 × 1000 =
  4. 4.1.63 ÷ 100 =
  5. 5.427.4 × 10 =
  6. 6.31.95 ÷ 100 =
  7. 7.23.11 × 1000 =
  8. 8.35.63 × 100 =
  9. 9.40.81 × 100 =
  10. 10.31.51 × 100 =
  11. 11.39.46 × 100 =
  12. 12.37.85 × 1000 =
  13. 13.39.95 ÷ 10 =
  14. 14.17.73 ÷ 100 =
  15. 15.393.4 ÷ 1000 =
  16. 16.179.8 ÷ 10 =
  17. 17.404.3 × 10 =
  18. 18.32.47 ÷ 10 =
  19. 19.335.7 × 10 =
  20. 20.31.63 × 1000 =
  21. 21.359.5 ÷ 100 =
  22. 22.193.4 ÷ 1000 =
  23. 23.491.2 ÷ 10 =
  24. 24.155.4 × 100 =
  25. 25.27.57 ÷ 1000 =
  26. 26.48.03 × 10 =
  27. 27.32.97 ÷ 1000 =
  28. 28.9.01 ÷ 1000 =
  29. 29.333.9 ÷ 100 =
  30. 30.88.4 × 10 =
  31. 31.375.6 ÷ 10 =
  32. 32.240.6 × 10 =
  33. 33.18.83 × 1000 =
  34. 34.42.01 ÷ 10 =
  35. 35.0.48 × 10 =
  36. 36.37.91 × 10 =
  37. 37.26.35 ÷ 100 =
  38. 38.248.8 ÷ 1000 =
  39. 39.42.43 × 10 =
  40. 40.25.93 × 100 =

Answer key

  1. 2.236
  2. 3731
  3. 33680
  4. 0.0163
  5. 4274
  6. 0.3195
  7. 23110
  8. 3563
  9. 4081
  10. 3151
  11. 3946
  12. 37850
  13. 3.995
  14. 0.1773
  15. 0.3934
  16. 17.98
  17. 4043
  18. 3.247
  19. 3357
  20. 31630
  21. 3.595
  22. 0.1934
  23. 49.12
  24. 15540
  25. 0.02757
  26. 480.3
  27. 0.03297
  28. 0.00901
  29. 3.339
  30. 884
  31. 37.56
  32. 2406
  33. 18830
  34. 4.201
  35. 4.8
  36. 379.1
  37. 0.2635
  38. 0.2488
  39. 424.3
  40. 2593

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