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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 859 · 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. 1.4.55 × 10 =
  2. 2.222.4 × 100 =
  3. 3.28.79 × 10 =
  4. 4.59.5 ÷ 100 =
  5. 5.378.6 × 1000 =
  6. 6.201.6 × 10 =
  7. 7.0.94 ÷ 10 =
  8. 8.99.1 ÷ 10 =
  9. 9.24.64 ÷ 10 =
  10. 10.64.1 ÷ 100 =
  11. 11.2.32 × 10 =
  12. 12.96.7 × 1000 =
  13. 13.2.05 ÷ 10 =
  14. 14.70.8 ÷ 1000 =
  15. 15.94.3 ÷ 10 =
  16. 16.26.78 ÷ 10 =
  17. 17.45.7 ÷ 1000 =
  18. 18.197.1 ÷ 10 =
  19. 19.1.26 × 100 =
  20. 20.9.18 × 1000 =
  21. 21.409.1 ÷ 1000 =
  22. 22.40.91 ÷ 1000 =
  23. 23.45.06 ÷ 10 =
  24. 24.348.3 ÷ 1000 =
  25. 25.295.9 × 10 =
  26. 26.5.13 ÷ 10 =
  27. 27.128.8 × 10 =
  28. 28.27.4 ÷ 1000 =
  29. 29.28.97 ÷ 10 =
  30. 30.33.93 × 100 =
  31. 31.1.07 × 10 =
  32. 32.42.72 × 1000 =
  33. 33.271.1 × 100 =
  34. 34.26.91 ÷ 100 =
  35. 35.72.9 × 100 =
  36. 36.279.9 × 1000 =
  37. 37.19.73 × 100 =
  38. 38.37.45 ÷ 100 =
  39. 39.482.6 ÷ 10 =
  40. 40.231.7 ÷ 1000 =

Answer key

  1. 45.5
  2. 22240
  3. 287.9
  4. 0.595
  5. 378600
  6. 2016
  7. 0.094
  8. 9.91
  9. 2.464
  10. 0.641
  11. 23.2
  12. 96700
  13. 0.205
  14. 0.0708
  15. 9.43
  16. 2.678
  17. 0.0457
  18. 19.71
  19. 126
  20. 9180
  21. 0.4091
  22. 0.04091
  23. 4.506
  24. 0.3483
  25. 2959
  26. 0.513
  27. 1288
  28. 0.0274
  29. 2.897
  30. 3393
  31. 10.7
  32. 42720
  33. 27110
  34. 0.2691
  35. 7290
  36. 279900
  37. 1973
  38. 0.3745
  39. 48.26
  40. 0.2317

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