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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 643 · 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. 1.0.58 × 100 =
  2. 2.32.32 ÷ 10 =
  3. 3.49.81 × 100 =
  4. 4.478.1 × 1000 =
  5. 5.3.17 × 10 =
  6. 6.325.7 × 1000 =
  7. 7.277.4 ÷ 1000 =
  8. 8.170.3 ÷ 100 =
  9. 9.13.75 × 100 =
  10. 10.190.4 ÷ 100 =
  11. 11.150.1 ÷ 10 =
  12. 12.328.7 ÷ 10 =
  13. 13.19.21 ÷ 10 =
  14. 14.489.7 × 100 =
  15. 15.37.12 × 10 =
  16. 16.25.05 × 100 =
  17. 17.329.8 × 10 =
  18. 18.38.83 × 100 =
  19. 19.1.58 × 10 =
  20. 20.27.11 × 100 =
  21. 21.4.81 ÷ 100 =
  22. 22.45.25 × 100 =
  23. 23.25.78 ÷ 100 =
  24. 24.22.28 × 10 =
  25. 25.106.1 ÷ 100 =
  26. 26.32.07 × 1000 =
  27. 27.4.61 × 10 =
  28. 28.32.99 ÷ 10 =
  29. 29.444.9 × 10 =
  30. 30.263.3 × 1000 =
  31. 31.21.51 × 1000 =
  32. 32.154.2 × 100 =
  33. 33.8.1 × 1000 =
  34. 34.28.63 × 10 =
  35. 35.32.69 ÷ 1000 =
  36. 36.167.5 ÷ 10 =
  37. 37.10.44 ÷ 100 =
  38. 38.344.7 ÷ 100 =
  39. 39.3.3 × 1000 =
  40. 40.38.36 ÷ 100 =

Answer key

  1. 58
  2. 3.232
  3. 4981
  4. 478100
  5. 31.7
  6. 325700
  7. 0.2774
  8. 1.703
  9. 1375
  10. 1.904
  11. 15.01
  12. 32.87
  13. 1.921
  14. 48970
  15. 371.2
  16. 2505
  17. 3298
  18. 3883
  19. 15.8
  20. 2711
  21. 0.0481
  22. 4525
  23. 0.2578
  24. 222.8
  25. 1.061
  26. 32070
  27. 46.1
  28. 3.299
  29. 4449
  30. 263300
  31. 21510
  32. 15420
  33. 8100
  34. 286.3
  35. 0.03269
  36. 16.75
  37. 0.1044
  38. 3.447
  39. 3300
  40. 0.3836

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