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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 668 · 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. 1.8.81 ÷ 100 =
  2. 2.30.44 × 100 =
  3. 3.47.81 × 1000 =
  4. 4.22.61 × 10 =
  5. 5.110.2 ÷ 1000 =
  6. 6.1.62 × 10 =
  7. 7.414.9 ÷ 10 =
  8. 8.397.1 × 10 =
  9. 9.33.17 × 10 =
  10. 10.22.46 × 1000 =
  11. 11.154.9 × 100 =
  12. 12.46.62 ÷ 10 =
  13. 13.8.15 × 100 =
  14. 14.210.7 × 10 =
  15. 15.47.81 ÷ 10 =
  16. 16.10.99 × 10 =
  17. 17.13.11 ÷ 10 =
  18. 18.0.23 ÷ 10 =
  19. 19.369.5 × 10 =
  20. 20.39.8 × 100 =
  21. 21.320.4 × 1000 =
  22. 22.21.26 × 10 =
  23. 23.26.81 ÷ 10 =
  24. 24.461.5 × 100 =
  25. 25.438.9 × 10 =
  26. 26.2.01 × 1000 =
  27. 27.2.1 × 100 =
  28. 28.3.03 ÷ 100 =
  29. 29.47.61 × 1000 =
  30. 30.32.64 ÷ 100 =
  31. 31.31.51 ÷ 10 =
  32. 32.416.9 × 100 =
  33. 33.131.2 × 10 =
  34. 34.8.64 × 1000 =
  35. 35.110.8 × 10 =
  36. 36.7.1 × 1000 =
  37. 37.47.62 × 100 =
  38. 38.25.85 × 10 =
  39. 39.172.8 × 1000 =
  40. 40.35.1 ÷ 1000 =

Answer key

  1. 0.0881
  2. 3044
  3. 47810
  4. 226.1
  5. 0.1102
  6. 16.2
  7. 41.49
  8. 3971
  9. 331.7
  10. 22460
  11. 15490
  12. 4.662
  13. 815
  14. 2107
  15. 4.781
  16. 109.9
  17. 1.311
  18. 0.023
  19. 3695
  20. 3980
  21. 320400
  22. 212.6
  23. 2.681
  24. 46150
  25. 4389
  26. 2010
  27. 210
  28. 0.0303
  29. 47610
  30. 0.3264
  31. 3.151
  32. 41690
  33. 1312
  34. 8640
  35. 1108
  36. 7100
  37. 4762
  38. 258.5
  39. 172800
  40. 0.0351

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