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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 65 · 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. 1.462.1 ÷ 1000 =
  2. 2.168.4 × 100 =
  3. 3.202.5 ÷ 100 =
  4. 4.448.5 ÷ 100 =
  5. 5.23.75 × 10 =
  6. 6.374.1 × 100 =
  7. 7.35.1 × 100 =
  8. 8.21.93 ÷ 10 =
  9. 9.1.45 ÷ 10 =
  10. 10.164.3 × 1000 =
  11. 11.22.14 × 1000 =
  12. 12.38.04 ÷ 100 =
  13. 13.331.9 ÷ 1000 =
  14. 14.487.7 × 10 =
  15. 15.7.25 × 100 =
  16. 16.491.8 × 1000 =
  17. 17.202.2 ÷ 10 =
  18. 18.45.79 × 1000 =
  19. 19.3.25 × 10 =
  20. 20.3.03 ÷ 1000 =
  21. 21.491.6 ÷ 10 =
  22. 22.321.3 ÷ 10 =
  23. 23.29.57 × 10 =
  24. 24.18.42 × 100 =
  25. 25.39.23 × 100 =
  26. 26.8.1 ÷ 1000 =
  27. 27.1.39 ÷ 10 =
  28. 28.436.7 × 10 =
  29. 29.39.85 × 1000 =
  30. 30.336.8 × 10 =
  31. 31.9.82 ÷ 100 =
  32. 32.15.84 × 1000 =
  33. 33.136.1 × 1000 =
  34. 34.36.23 × 10 =
  35. 35.311.5 × 100 =
  36. 36.46.81 × 1000 =
  37. 37.199.2 × 1000 =
  38. 38.217.6 × 1000 =
  39. 39.143.1 ÷ 10 =
  40. 40.23.98 × 10 =

Answer key

  1. 0.4621
  2. 16840
  3. 2.025
  4. 4.485
  5. 237.5
  6. 37410
  7. 3510
  8. 2.193
  9. 0.145
  10. 164300
  11. 22140
  12. 0.3804
  13. 0.3319
  14. 4877
  15. 725
  16. 491800
  17. 20.22
  18. 45790
  19. 32.5
  20. 0.00303
  21. 49.16
  22. 32.13
  23. 295.7
  24. 1842
  25. 3923
  26. 0.0081
  27. 0.139
  28. 4367
  29. 39850
  30. 3368
  31. 0.0982
  32. 15840
  33. 136100
  34. 362.3
  35. 31150
  36. 46810
  37. 199200
  38. 217600
  39. 14.31
  40. 239.8

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