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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 525 · 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. 1.11.2 ÷ 100 =
  2. 2.2.29 × 100 =
  3. 3.48.74 ÷ 10 =
  4. 4.175.1 ÷ 1000 =
  5. 5.8.85 ÷ 10 =
  6. 6.304.3 ÷ 100 =
  7. 7.30.48 ÷ 100 =
  8. 8.266.6 ÷ 100 =
  9. 9.20.96 × 100 =
  10. 10.10.43 × 100 =
  11. 11.43.1 ÷ 100 =
  12. 12.10.95 × 10 =
  13. 13.48.35 × 1000 =
  14. 14.17.22 × 10 =
  15. 15.372.1 × 100 =
  16. 16.31.05 × 1000 =
  17. 17.32.51 × 10 =
  18. 18.36.46 ÷ 1000 =
  19. 19.33.41 × 10 =
  20. 20.465.7 × 1000 =
  21. 21.292.7 ÷ 10 =
  22. 22.4.54 × 1000 =
  23. 23.25.26 ÷ 100 =
  24. 24.140.7 × 100 =
  25. 25.49.25 ÷ 1000 =
  26. 26.41.66 × 100 =
  27. 27.23.21 ÷ 100 =
  28. 28.33.61 × 100 =
  29. 29.9.28 ÷ 1000 =
  30. 30.428.9 × 10 =
  31. 31.35.94 × 10 =
  32. 32.1.07 × 100 =
  33. 33.214.4 × 100 =
  34. 34.353.1 × 1000 =
  35. 35.10.67 × 100 =
  36. 36.448.9 ÷ 100 =
  37. 37.28.32 × 10 =
  38. 38.221.7 ÷ 1000 =
  39. 39.47.21 × 1000 =
  40. 40.386.7 ÷ 100 =

Answer key

  1. 0.112
  2. 229
  3. 4.874
  4. 0.1751
  5. 0.885
  6. 3.043
  7. 0.3048
  8. 2.666
  9. 2096
  10. 1043
  11. 0.431
  12. 109.5
  13. 48350
  14. 172.2
  15. 37210
  16. 31050
  17. 325.1
  18. 0.03646
  19. 334.1
  20. 465700
  21. 29.27
  22. 4540
  23. 0.2526
  24. 14070
  25. 0.04925
  26. 4166
  27. 0.2321
  28. 3361
  29. 0.00928
  30. 4289
  31. 359.4
  32. 107
  33. 21440
  34. 353100
  35. 1067
  36. 4.489
  37. 283.2
  38. 0.2217
  39. 47210
  40. 3.867

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