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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 277 · 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. 1.118.9 ÷ 10 =
  2. 2.32.71 × 100 =
  3. 3.29.01 ÷ 1000 =
  4. 4.35.16 ÷ 10 =
  5. 5.38.24 × 100 =
  6. 6.8.73 ÷ 10 =
  7. 7.34.16 × 10 =
  8. 8.15.13 × 10 =
  9. 9.222.8 × 100 =
  10. 10.112.1 × 100 =
  11. 11.12.02 × 1000 =
  12. 12.398.9 ÷ 10 =
  13. 13.92.7 × 100 =
  14. 14.203.1 × 100 =
  15. 15.201.9 × 100 =
  16. 16.44.76 × 100 =
  17. 17.62.3 × 1000 =
  18. 18.5.21 × 100 =
  19. 19.172.5 ÷ 100 =
  20. 20.39.31 × 10 =
  21. 21.36.07 × 1000 =
  22. 22.42.21 ÷ 100 =
  23. 23.69.2 ÷ 100 =
  24. 24.0.34 × 10 =
  25. 25.11.54 × 1000 =
  26. 26.41.96 ÷ 10 =
  27. 27.56.1 ÷ 10 =
  28. 28.20.21 × 100 =
  29. 29.419.5 × 100 =
  30. 30.159.1 × 100 =
  31. 31.285.3 × 100 =
  32. 32.285.8 ÷ 100 =
  33. 33.22.81 × 10 =
  34. 34.14.41 ÷ 1000 =
  35. 35.11.37 × 1000 =
  36. 36.18.11 × 1000 =
  37. 37.405.9 ÷ 100 =
  38. 38.1.02 ÷ 1000 =
  39. 39.340.1 ÷ 100 =
  40. 40.89.5 × 1000 =

Answer key

  1. 11.89
  2. 3271
  3. 0.02901
  4. 3.516
  5. 3824
  6. 0.873
  7. 341.6
  8. 151.3
  9. 22280
  10. 11210
  11. 12020
  12. 39.89
  13. 9270
  14. 20310
  15. 20190
  16. 4476
  17. 62300
  18. 521
  19. 1.725
  20. 393.1
  21. 36070
  22. 0.4221
  23. 0.692
  24. 3.4
  25. 11540
  26. 4.196
  27. 5.61
  28. 2021
  29. 41950
  30. 15910
  31. 28530
  32. 2.858
  33. 228.1
  34. 0.01441
  35. 11370
  36. 18110
  37. 4.059
  38. 0.00102
  39. 3.401
  40. 89500

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