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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 871 · 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. 1.8.77 × 100 =
  2. 2.39.21 × 100 =
  3. 3.135.5 × 100 =
  4. 4.253.1 × 100 =
  5. 5.4.11 ÷ 1000 =
  6. 6.44.33 ÷ 1000 =
  7. 7.200.1 × 10 =
  8. 8.3.6 × 1000 =
  9. 9.99.5 ÷ 10 =
  10. 10.41.05 × 1000 =
  11. 11.43.15 ÷ 100 =
  12. 12.3.47 × 10 =
  13. 13.2.12 ÷ 10 =
  14. 14.12.18 × 100 =
  15. 15.24.04 ÷ 10 =
  16. 16.128.7 × 100 =
  17. 17.15.27 × 1000 =
  18. 18.328.1 ÷ 100 =
  19. 19.45.15 ÷ 100 =
  20. 20.302.3 × 10 =
  21. 21.19.47 ÷ 100 =
  22. 22.28.81 × 100 =
  23. 23.108.1 ÷ 10 =
  24. 24.39.71 ÷ 100 =
  25. 25.282.7 ÷ 1000 =
  26. 26.124.1 × 100 =
  27. 27.49.5 ÷ 10 =
  28. 28.162.3 ÷ 10 =
  29. 29.252.7 ÷ 100 =
  30. 30.36.01 × 10 =
  31. 31.22.21 ÷ 1000 =
  32. 32.477.7 ÷ 100 =
  33. 33.371.2 × 10 =
  34. 34.13.99 ÷ 1000 =
  35. 35.176.6 × 10 =
  36. 36.36.6 × 10 =
  37. 37.3.18 × 10 =
  38. 38.36.13 ÷ 1000 =
  39. 39.381.1 × 10 =
  40. 40.187.4 ÷ 1000 =

Answer key

  1. 877
  2. 3921
  3. 13550
  4. 25310
  5. 0.00411
  6. 0.04433
  7. 2001
  8. 3600
  9. 9.95
  10. 41050
  11. 0.4315
  12. 34.7
  13. 0.212
  14. 1218
  15. 2.404
  16. 12870
  17. 15270
  18. 3.281
  19. 0.4515
  20. 3023
  21. 0.1947
  22. 2881
  23. 10.81
  24. 0.3971
  25. 0.2827
  26. 12410
  27. 4.95
  28. 16.23
  29. 2.527
  30. 360.1
  31. 0.02221
  32. 4.777
  33. 3712
  34. 0.01399
  35. 1766
  36. 366
  37. 31.8
  38. 0.03613
  39. 3811
  40. 0.1874

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