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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 895 · 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. 1.13.84 × 100 =
  2. 2.20.25 ÷ 10 =
  3. 3.10.86 × 1000 =
  4. 4.289.2 × 1000 =
  5. 5.410.5 × 1000 =
  6. 6.43.84 × 100 =
  7. 7.271.9 × 10 =
  8. 8.394.4 ÷ 100 =
  9. 9.21.91 × 100 =
  10. 10.18.92 × 100 =
  11. 11.352.6 ÷ 10 =
  12. 12.357.2 ÷ 10 =
  13. 13.40.74 × 100 =
  14. 14.0.81 × 10 =
  15. 15.376.9 ÷ 1000 =
  16. 16.8.7 ÷ 10 =
  17. 17.15.29 × 100 =
  18. 18.203.3 × 100 =
  19. 19.47.81 × 100 =
  20. 20.45.68 ÷ 1000 =
  21. 21.13.98 × 1000 =
  22. 22.6.34 × 1000 =
  23. 23.45.03 × 1000 =
  24. 24.9.19 ÷ 100 =
  25. 25.297.5 ÷ 100 =
  26. 26.38.62 × 1000 =
  27. 27.116.1 × 10 =
  28. 28.13.11 × 1000 =
  29. 29.219.6 ÷ 10 =
  30. 30.22.37 ÷ 10 =
  31. 31.13.61 × 10 =
  32. 32.11.69 ÷ 10 =
  33. 33.160.3 × 10 =
  34. 34.34.69 × 1000 =
  35. 35.222.1 × 10 =
  36. 36.499.1 ÷ 100 =
  37. 37.40.31 × 1000 =
  38. 38.392.4 ÷ 100 =
  39. 39.4.41 × 1000 =
  40. 40.265.2 × 10 =

Answer key

  1. 1384
  2. 2.025
  3. 10860
  4. 289200
  5. 410500
  6. 4384
  7. 2719
  8. 3.944
  9. 2191
  10. 1892
  11. 35.26
  12. 35.72
  13. 4074
  14. 8.1
  15. 0.3769
  16. 0.87
  17. 1529
  18. 20330
  19. 4781
  20. 0.04568
  21. 13980
  22. 6340
  23. 45030
  24. 0.0919
  25. 2.975
  26. 38620
  27. 1161
  28. 13110
  29. 21.96
  30. 2.237
  31. 136.1
  32. 1.169
  33. 1603
  34. 34690
  35. 2221
  36. 4.991
  37. 40310
  38. 3.924
  39. 4410
  40. 2652

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