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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 713 · 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. 1.462.9 ÷ 10 =
  2. 2.22.16 × 100 =
  3. 3.83.6 ÷ 1000 =
  4. 4.38.27 × 1000 =
  5. 5.1.11 × 1000 =
  6. 6.40.92 ÷ 10 =
  7. 7.41.96 × 100 =
  8. 8.345.4 ÷ 1000 =
  9. 9.66.2 ÷ 1000 =
  10. 10.31.02 × 100 =
  11. 11.3.36 × 1000 =
  12. 12.479.3 ÷ 10 =
  13. 13.148.1 ÷ 10 =
  14. 14.197.1 × 10 =
  15. 15.7.32 × 1000 =
  16. 16.432.4 ÷ 100 =
  17. 17.165.6 × 10 =
  18. 18.342.2 × 1000 =
  19. 19.337.5 × 10 =
  20. 20.47.7 × 1000 =
  21. 21.96.1 × 10 =
  22. 22.75.9 ÷ 1000 =
  23. 23.182.4 × 10 =
  24. 24.320.8 ÷ 10 =
  25. 25.74.4 × 10 =
  26. 26.18.94 ÷ 1000 =
  27. 27.321.3 ÷ 100 =
  28. 28.6.1 ÷ 10 =
  29. 29.18.41 ÷ 1000 =
  30. 30.3.63 × 1000 =
  31. 31.33.38 × 10 =
  32. 32.172.7 × 1000 =
  33. 33.46.16 × 1000 =
  34. 34.44.96 × 10 =
  35. 35.8.57 × 10 =
  36. 36.33.9 ÷ 10 =
  37. 37.4.78 × 1000 =
  38. 38.431.6 ÷ 100 =
  39. 39.45.27 ÷ 10 =
  40. 40.263.8 × 10 =

Answer key

  1. 46.29
  2. 2216
  3. 0.0836
  4. 38270
  5. 1110
  6. 4.092
  7. 4196
  8. 0.3454
  9. 0.0662
  10. 3102
  11. 3360
  12. 47.93
  13. 14.81
  14. 1971
  15. 7320
  16. 4.324
  17. 1656
  18. 342200
  19. 3375
  20. 47700
  21. 961
  22. 0.0759
  23. 1824
  24. 32.08
  25. 744
  26. 0.01894
  27. 3.213
  28. 0.61
  29. 0.01841
  30. 3630
  31. 333.8
  32. 172700
  33. 46160
  34. 449.6
  35. 85.7
  36. 3.39
  37. 4780
  38. 4.316
  39. 4.527
  40. 2638

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