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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 201 · 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. 1.0.31 × 10 =
  2. 2.79.3 × 1000 =
  3. 3.102.5 ÷ 100 =
  4. 4.205.7 ÷ 10 =
  5. 5.194.2 ÷ 1000 =
  6. 6.270.2 × 100 =
  7. 7.31.54 × 10 =
  8. 8.39.4 × 1000 =
  9. 9.113.9 ÷ 10 =
  10. 10.31.74 × 100 =
  11. 11.48.76 ÷ 100 =
  12. 12.404.4 × 1000 =
  13. 13.135.1 ÷ 10 =
  14. 14.8.44 × 1000 =
  15. 15.281.9 × 10 =
  16. 16.9.99 ÷ 1000 =
  17. 17.62.7 ÷ 10 =
  18. 18.258.1 × 100 =
  19. 19.290.1 ÷ 1000 =
  20. 20.32.58 × 100 =
  21. 21.187.9 ÷ 100 =
  22. 22.10.18 × 1000 =
  23. 23.11.5 × 100 =
  24. 24.56.6 ÷ 10 =
  25. 25.23.91 × 1000 =
  26. 26.153.9 × 1000 =
  27. 27.49.65 × 100 =
  28. 28.390.6 × 100 =
  29. 29.49.31 × 100 =
  30. 30.287.2 × 1000 =
  31. 31.374.5 ÷ 10 =
  32. 32.45.44 ÷ 1000 =
  33. 33.133.6 × 10 =
  34. 34.409.1 ÷ 1000 =
  35. 35.16.42 ÷ 1000 =
  36. 36.215.3 ÷ 100 =
  37. 37.122.1 × 100 =
  38. 38.145.1 × 10 =
  39. 39.200.9 × 10 =
  40. 40.20.63 ÷ 100 =

Answer key

  1. 3.1
  2. 79300
  3. 1.025
  4. 20.57
  5. 0.1942
  6. 27020
  7. 315.4
  8. 39400
  9. 11.39
  10. 3174
  11. 0.4876
  12. 404400
  13. 13.51
  14. 8440
  15. 2819
  16. 0.00999
  17. 6.27
  18. 25810
  19. 0.2901
  20. 3258
  21. 1.879
  22. 10180
  23. 1150
  24. 5.66
  25. 23910
  26. 153900
  27. 4965
  28. 39060
  29. 4931
  30. 287200
  31. 37.45
  32. 0.04544
  33. 1336
  34. 0.4091
  35. 0.01642
  36. 2.153
  37. 12210
  38. 1451
  39. 2009
  40. 0.2063

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