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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 247 · 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. 1.123.5 ÷ 10 =
  2. 2.39.2 ÷ 100 =
  3. 3.497.5 ÷ 100 =
  4. 4.7.95 × 100 =
  5. 5.48.93 × 100 =
  6. 6.23.74 × 10 =
  7. 7.470.3 × 1000 =
  8. 8.34.46 × 1000 =
  9. 9.3.18 × 10 =
  10. 10.393.6 ÷ 100 =
  11. 11.6.18 ÷ 100 =
  12. 12.86.4 × 10 =
  13. 13.109.8 × 100 =
  14. 14.181.1 ÷ 10 =
  15. 15.341.2 × 10 =
  16. 16.364.8 × 1000 =
  17. 17.412.2 × 10 =
  18. 18.29.89 ÷ 1000 =
  19. 19.31.15 ÷ 10 =
  20. 20.338.4 × 10 =
  21. 21.430.1 ÷ 10 =
  22. 22.295.5 ÷ 1000 =
  23. 23.17.48 × 100 =
  24. 24.13.21 ÷ 1000 =
  25. 25.7.21 ÷ 10 =
  26. 26.212.3 ÷ 100 =
  27. 27.75.1 × 100 =
  28. 28.213.1 ÷ 1000 =
  29. 29.477.7 ÷ 1000 =
  30. 30.60.5 ÷ 100 =
  31. 31.230.9 ÷ 100 =
  32. 32.327.6 ÷ 10 =
  33. 33.37.74 × 100 =
  34. 34.26.02 × 10 =
  35. 35.36.27 × 100 =
  36. 36.273.3 × 10 =
  37. 37.172.5 ÷ 100 =
  38. 38.448.1 × 10 =
  39. 39.4.45 ÷ 10 =
  40. 40.218.3 ÷ 1000 =

Answer key

  1. 12.35
  2. 0.392
  3. 4.975
  4. 795
  5. 4893
  6. 237.4
  7. 470300
  8. 34460
  9. 31.8
  10. 3.936
  11. 0.0618
  12. 864
  13. 10980
  14. 18.11
  15. 3412
  16. 364800
  17. 4122
  18. 0.02989
  19. 3.115
  20. 3384
  21. 43.01
  22. 0.2955
  23. 1748
  24. 0.01321
  25. 0.721
  26. 2.123
  27. 7510
  28. 0.2131
  29. 0.4777
  30. 0.605
  31. 2.309
  32. 32.76
  33. 3774
  34. 260.2
  35. 3627
  36. 2733
  37. 1.725
  38. 4481
  39. 0.445
  40. 0.2183

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