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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 245 · 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. 1.405.3 ÷ 100 =
  2. 2.9.23 ÷ 100 =
  3. 3.258.9 ÷ 10 =
  4. 4.5.85 × 10 =
  5. 5.166.1 × 100 =
  6. 6.35.89 ÷ 100 =
  7. 7.33.57 ÷ 10 =
  8. 8.18.18 × 1000 =
  9. 9.30.18 × 10 =
  10. 10.48.05 ÷ 10 =
  11. 11.227.9 ÷ 10 =
  12. 12.24.71 × 1000 =
  13. 13.10.63 × 100 =
  14. 14.258.1 × 10 =
  15. 15.0.51 ÷ 1000 =
  16. 16.10.03 ÷ 1000 =
  17. 17.173.9 × 100 =
  18. 18.4.21 ÷ 100 =
  19. 19.11.65 × 1000 =
  20. 20.140.5 ÷ 10 =
  21. 21.6.89 × 10 =
  22. 22.31.9 × 1000 =
  23. 23.31.01 × 100 =
  24. 24.229.9 ÷ 100 =
  25. 25.40.9 ÷ 1000 =
  26. 26.3.87 × 10 =
  27. 27.40.09 × 10 =
  28. 28.444.8 × 1000 =
  29. 29.36.97 × 1000 =
  30. 30.167.2 ÷ 10 =
  31. 31.106.7 ÷ 1000 =
  32. 32.1.82 × 10 =
  33. 33.194.2 × 10 =
  34. 34.25.91 × 10 =
  35. 35.90.2 × 100 =
  36. 36.21.78 × 10 =
  37. 37.58.4 × 1000 =
  38. 38.20.73 × 10 =
  39. 39.42.18 ÷ 100 =
  40. 40.126.5 × 100 =

Answer key

  1. 4.053
  2. 0.0923
  3. 25.89
  4. 58.5
  5. 16610
  6. 0.3589
  7. 3.357
  8. 18180
  9. 301.8
  10. 4.805
  11. 22.79
  12. 24710
  13. 1063
  14. 2581
  15. 0.00051
  16. 0.01003
  17. 17390
  18. 0.0421
  19. 11650
  20. 14.05
  21. 68.9
  22. 31900
  23. 3101
  24. 2.299
  25. 0.0409
  26. 38.7
  27. 400.9
  28. 444800
  29. 36970
  30. 16.72
  31. 0.1067
  32. 18.2
  33. 1942
  34. 259.1
  35. 9020
  36. 217.8
  37. 58400
  38. 207.3
  39. 0.4218
  40. 12650

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