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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 50 · 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. 1.303.1 ÷ 100 =
  2. 2.207.1 × 1000 =
  3. 3.129.1 ÷ 100 =
  4. 4.28.23 × 100 =
  5. 5.13.44 ÷ 100 =
  6. 6.189.5 × 1000 =
  7. 7.114.4 × 10 =
  8. 8.482.8 ÷ 100 =
  9. 9.122.3 × 1000 =
  10. 10.48.41 ÷ 100 =
  11. 11.13.31 ÷ 100 =
  12. 12.8.3 ÷ 100 =
  13. 13.0.82 ÷ 10 =
  14. 14.166.7 ÷ 10 =
  15. 15.312.7 ÷ 10 =
  16. 16.28.88 × 1000 =
  17. 17.63.2 × 10 =
  18. 18.18.95 ÷ 1000 =
  19. 19.290.3 × 1000 =
  20. 20.27.63 × 10 =
  21. 21.469.7 × 10 =
  22. 22.67.7 ÷ 100 =
  23. 23.43.03 ÷ 10 =
  24. 24.52.2 × 10 =
  25. 25.4.06 ÷ 100 =
  26. 26.1.35 × 10 =
  27. 27.107.1 × 100 =
  28. 28.14.94 ÷ 1000 =
  29. 29.416.1 ÷ 10 =
  30. 30.35.83 ÷ 10 =
  31. 31.110.1 ÷ 10 =
  32. 32.10.28 ÷ 10 =
  33. 33.26.21 × 10 =
  34. 34.33.25 × 10 =
  35. 35.4.31 × 10 =
  36. 36.346.7 × 100 =
  37. 37.39.7 ÷ 1000 =
  38. 38.28.77 ÷ 1000 =
  39. 39.6.29 ÷ 1000 =
  40. 40.118.1 ÷ 10 =

Answer key

  1. 3.031
  2. 207100
  3. 1.291
  4. 2823
  5. 0.1344
  6. 189500
  7. 1144
  8. 4.828
  9. 122300
  10. 0.4841
  11. 0.1331
  12. 0.083
  13. 0.082
  14. 16.67
  15. 31.27
  16. 28880
  17. 632
  18. 0.01895
  19. 290300
  20. 276.3
  21. 4697
  22. 0.677
  23. 4.303
  24. 522
  25. 0.0406
  26. 13.5
  27. 10710
  28. 0.01494
  29. 41.61
  30. 3.583
  31. 11.01
  32. 1.028
  33. 262.1
  34. 332.5
  35. 43.1
  36. 34670
  37. 0.0397
  38. 0.02877
  39. 0.00629
  40. 11.81

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