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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 264 · 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. 1.12.01 × 1000 =
  2. 2.30.4 × 1000 =
  3. 3.30.62 × 10 =
  4. 4.11.39 × 10 =
  5. 5.29.31 × 10 =
  6. 6.50.2 × 1000 =
  7. 7.17.89 ÷ 1000 =
  8. 8.16.19 ÷ 10 =
  9. 9.41.46 ÷ 100 =
  10. 10.286.7 × 10 =
  11. 11.109.2 ÷ 10 =
  12. 12.56.4 ÷ 100 =
  13. 13.47.1 × 100 =
  14. 14.352.6 ÷ 1000 =
  15. 15.9.42 × 10 =
  16. 16.41.61 ÷ 1000 =
  17. 17.6.19 × 100 =
  18. 18.39.9 × 100 =
  19. 19.25.71 × 100 =
  20. 20.6.81 × 10 =
  21. 21.10.14 ÷ 10 =
  22. 22.147.2 × 10 =
  23. 23.170.2 ÷ 100 =
  24. 24.252.2 × 100 =
  25. 25.22.1 × 10 =
  26. 26.13.25 × 1000 =
  27. 27.366.3 ÷ 100 =
  28. 28.20.97 × 100 =
  29. 29.3.33 × 1000 =
  30. 30.48.81 ÷ 1000 =
  31. 31.490.5 ÷ 10 =
  32. 32.39.63 × 10 =
  33. 33.278.1 × 10 =
  34. 34.7.11 ÷ 1000 =
  35. 35.339.8 × 100 =
  36. 36.262.2 × 1000 =
  37. 37.30.5 × 1000 =
  38. 38.20.91 × 100 =
  39. 39.78.8 ÷ 10 =
  40. 40.423.1 × 1000 =

Answer key

  1. 12010
  2. 30400
  3. 306.2
  4. 113.9
  5. 293.1
  6. 50200
  7. 0.01789
  8. 1.619
  9. 0.4146
  10. 2867
  11. 10.92
  12. 0.564
  13. 4710
  14. 0.3526
  15. 94.2
  16. 0.04161
  17. 619
  18. 3990
  19. 2571
  20. 68.1
  21. 1.014
  22. 1472
  23. 1.702
  24. 25220
  25. 221
  26. 13250
  27. 3.663
  28. 2097
  29. 3330
  30. 0.04881
  31. 49.05
  32. 396.3
  33. 2781
  34. 0.00711
  35. 33980
  36. 262200
  37. 30500
  38. 2091
  39. 7.88
  40. 423100

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