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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 700 · 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. 1.18.07 ÷ 100 =
  2. 2.339.9 × 10 =
  3. 3.112.1 × 1000 =
  4. 4.9.13 ÷ 10 =
  5. 5.14.15 ÷ 100 =
  6. 6.45.71 ÷ 100 =
  7. 7.33.37 × 10 =
  8. 8.141.5 × 100 =
  9. 9.12.97 × 1000 =
  10. 10.295.1 × 1000 =
  11. 11.320.1 ÷ 10 =
  12. 12.7.05 ÷ 100 =
  13. 13.48.01 ÷ 1000 =
  14. 14.5.28 ÷ 100 =
  15. 15.38.62 × 100 =
  16. 16.45.63 × 1000 =
  17. 17.21.42 ÷ 100 =
  18. 18.18.88 ÷ 100 =
  19. 19.41.06 × 10 =
  20. 20.20.44 × 10 =
  21. 21.18.6 × 10 =
  22. 22.52.7 × 100 =
  23. 23.165.3 × 100 =
  24. 24.3.12 ÷ 100 =
  25. 25.173.7 ÷ 10 =
  26. 26.20.06 ÷ 1000 =
  27. 27.236.6 ÷ 100 =
  28. 28.13.91 ÷ 10 =
  29. 29.251.9 × 10 =
  30. 30.18.09 ÷ 10 =
  31. 31.43.3 × 100 =
  32. 32.437.4 × 100 =
  33. 33.44.68 ÷ 1000 =
  34. 34.326.9 ÷ 1000 =
  35. 35.379.1 ÷ 10 =
  36. 36.16.14 ÷ 10 =
  37. 37.48.3 ÷ 10 =
  38. 38.77.5 ÷ 10 =
  39. 39.48.82 ÷ 10 =
  40. 40.247.1 × 10 =

Answer key

  1. 0.1807
  2. 3399
  3. 112100
  4. 0.913
  5. 0.1415
  6. 0.4571
  7. 333.7
  8. 14150
  9. 12970
  10. 295100
  11. 32.01
  12. 0.0705
  13. 0.04801
  14. 0.0528
  15. 3862
  16. 45630
  17. 0.2142
  18. 0.1888
  19. 410.6
  20. 204.4
  21. 186
  22. 5270
  23. 16530
  24. 0.0312
  25. 17.37
  26. 0.02006
  27. 2.366
  28. 1.391
  29. 2519
  30. 1.809
  31. 4330
  32. 43740
  33. 0.04468
  34. 0.3269
  35. 37.91
  36. 1.614
  37. 4.83
  38. 7.75
  39. 4.882
  40. 2471

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