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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 92 · 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. 1.38.81 × 10 =
  2. 2.10.73 ÷ 10 =
  3. 3.16.12 × 1000 =
  4. 4.18.81 × 100 =
  5. 5.40.57 × 100 =
  6. 6.116.2 × 100 =
  7. 7.88.5 × 100 =
  8. 8.29.31 × 10 =
  9. 9.35.28 × 100 =
  10. 10.230.9 × 1000 =
  11. 11.377.4 × 10 =
  12. 12.30.8 ÷ 100 =
  13. 13.461.2 × 10 =
  14. 14.108.6 × 100 =
  15. 15.396.9 ÷ 100 =
  16. 16.43.92 × 100 =
  17. 17.42.27 × 10 =
  18. 18.34.21 ÷ 1000 =
  19. 19.13.42 × 100 =
  20. 20.21.78 × 10 =
  21. 21.0.99 ÷ 1000 =
  22. 22.41.03 ÷ 1000 =
  23. 23.27.69 × 100 =
  24. 24.36.48 ÷ 1000 =
  25. 25.109.8 × 1000 =
  26. 26.496.8 ÷ 10 =
  27. 27.45.19 × 10 =
  28. 28.48.08 × 100 =
  29. 29.49.47 ÷ 10 =
  30. 30.399.3 ÷ 1000 =
  31. 31.133.4 ÷ 100 =
  32. 32.472.8 ÷ 10 =
  33. 33.36.87 ÷ 1000 =
  34. 34.37.09 × 10 =
  35. 35.36.27 ÷ 1000 =
  36. 36.29.99 ÷ 100 =
  37. 37.201.8 ÷ 100 =
  38. 38.73.1 × 10 =
  39. 39.15.3 ÷ 100 =
  40. 40.290.1 ÷ 100 =

Answer key

  1. 388.1
  2. 1.073
  3. 16120
  4. 1881
  5. 4057
  6. 11620
  7. 8850
  8. 293.1
  9. 3528
  10. 230900
  11. 3774
  12. 0.308
  13. 4612
  14. 10860
  15. 3.969
  16. 4392
  17. 422.7
  18. 0.03421
  19. 1342
  20. 217.8
  21. 0.00099
  22. 0.04103
  23. 2769
  24. 0.03648
  25. 109800
  26. 49.68
  27. 451.9
  28. 4808
  29. 4.947
  30. 0.3993
  31. 1.334
  32. 47.28
  33. 0.03687
  34. 370.9
  35. 0.03627
  36. 0.2999
  37. 2.018
  38. 731
  39. 0.153
  40. 2.901

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