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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 629 · 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. 1.25.5 × 100 =
  2. 2.232.6 × 10 =
  3. 3.227.9 × 100 =
  4. 4.319.7 × 10 =
  5. 5.151.6 × 10 =
  6. 6.5.08 × 10 =
  7. 7.137.5 × 100 =
  8. 8.166.3 × 10 =
  9. 9.5.09 × 100 =
  10. 10.337.7 × 10 =
  11. 11.38.58 × 100 =
  12. 12.96.7 ÷ 100 =
  13. 13.109.1 ÷ 100 =
  14. 14.371.1 × 1000 =
  15. 15.291.6 ÷ 100 =
  16. 16.29.51 ÷ 10 =
  17. 17.182.6 ÷ 100 =
  18. 18.22.76 ÷ 10 =
  19. 19.476.2 × 100 =
  20. 20.28.29 × 100 =
  21. 21.23.9 ÷ 100 =
  22. 22.5.71 ÷ 10 =
  23. 23.30.57 × 1000 =
  24. 24.6.6 ÷ 1000 =
  25. 25.24.7 × 10 =
  26. 26.339.7 ÷ 10 =
  27. 27.40.58 × 1000 =
  28. 28.15.93 ÷ 10 =
  29. 29.29.42 × 100 =
  30. 30.321.5 × 100 =
  31. 31.213.1 ÷ 1000 =
  32. 32.72.3 × 10 =
  33. 33.343.2 × 1000 =
  34. 34.193.8 × 10 =
  35. 35.161.8 × 100 =
  36. 36.133.3 × 1000 =
  37. 37.476.5 ÷ 100 =
  38. 38.25.08 ÷ 1000 =
  39. 39.354.4 ÷ 1000 =
  40. 40.3.33 ÷ 10 =

Answer key

  1. 2550
  2. 2326
  3. 22790
  4. 3197
  5. 1516
  6. 50.8
  7. 13750
  8. 1663
  9. 509
  10. 3377
  11. 3858
  12. 0.967
  13. 1.091
  14. 371100
  15. 2.916
  16. 2.951
  17. 1.826
  18. 2.276
  19. 47620
  20. 2829
  21. 0.239
  22. 0.571
  23. 30570
  24. 0.0066
  25. 247
  26. 33.97
  27. 40580
  28. 1.593
  29. 2942
  30. 32150
  31. 0.2131
  32. 723
  33. 343200
  34. 1938
  35. 16180
  36. 133300
  37. 4.765
  38. 0.02508
  39. 0.3544
  40. 0.333

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