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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 906 · 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. 1.87.8 × 1000 =
  2. 2.362.5 × 10 =
  3. 3.266.2 × 10 =
  4. 4.38.82 × 1000 =
  5. 5.24.16 ÷ 1000 =
  6. 6.352.8 × 1000 =
  7. 7.110.7 × 10 =
  8. 8.195.7 ÷ 100 =
  9. 9.111.4 × 10 =
  10. 10.13.72 × 1000 =
  11. 11.252.7 × 10 =
  12. 12.7.57 × 100 =
  13. 13.32.96 ÷ 100 =
  14. 14.436.2 × 10 =
  15. 15.34.71 × 10 =
  16. 16.132.3 ÷ 1000 =
  17. 17.173.1 × 10 =
  18. 18.346.1 × 1000 =
  19. 19.35.24 ÷ 1000 =
  20. 20.479.6 × 100 =
  21. 21.53.1 × 10 =
  22. 22.12.26 ÷ 1000 =
  23. 23.308.8 × 100 =
  24. 24.63.2 × 100 =
  25. 25.250.3 × 1000 =
  26. 26.39.34 ÷ 1000 =
  27. 27.486.7 ÷ 1000 =
  28. 28.12.06 × 1000 =
  29. 29.139.8 × 100 =
  30. 30.45.07 ÷ 1000 =
  31. 31.4.82 ÷ 100 =
  32. 32.371.4 ÷ 10 =
  33. 33.46.22 ÷ 10 =
  34. 34.15.41 ÷ 100 =
  35. 35.35.1 × 100 =
  36. 36.91.3 ÷ 100 =
  37. 37.16.84 ÷ 1000 =
  38. 38.389.3 × 1000 =
  39. 39.349.6 ÷ 1000 =
  40. 40.28.21 ÷ 1000 =

Answer key

  1. 87800
  2. 3625
  3. 2662
  4. 38820
  5. 0.02416
  6. 352800
  7. 1107
  8. 1.957
  9. 1114
  10. 13720
  11. 2527
  12. 757
  13. 0.3296
  14. 4362
  15. 347.1
  16. 0.1323
  17. 1731
  18. 346100
  19. 0.03524
  20. 47960
  21. 531
  22. 0.01226
  23. 30880
  24. 6320
  25. 250300
  26. 0.03934
  27. 0.4867
  28. 12060
  29. 13980
  30. 0.04507
  31. 0.0482
  32. 37.14
  33. 4.622
  34. 0.1541
  35. 3510
  36. 0.913
  37. 0.01684
  38. 389300
  39. 0.3496
  40. 0.02821

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