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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 37 · 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. 1.22.15 ÷ 10 =
  2. 2.49.17 ÷ 1000 =
  3. 3.17.26 ÷ 1000 =
  4. 4.87.9 × 10 =
  5. 5.11.98 × 1000 =
  6. 6.29.18 × 10 =
  7. 7.16.9 × 10 =
  8. 8.65.7 ÷ 1000 =
  9. 9.413.9 ÷ 10 =
  10. 10.3.44 ÷ 1000 =
  11. 11.333.6 × 10 =
  12. 12.41.63 ÷ 1000 =
  13. 13.464.4 × 10 =
  14. 14.30.59 × 1000 =
  15. 15.19.25 × 10 =
  16. 16.81.1 ÷ 100 =
  17. 17.319.5 ÷ 100 =
  18. 18.69.2 × 10 =
  19. 19.362.8 ÷ 100 =
  20. 20.29.52 ÷ 100 =
  21. 21.8.28 × 100 =
  22. 22.32.18 × 10 =
  23. 23.17.33 × 100 =
  24. 24.317.4 × 1000 =
  25. 25.30.09 × 100 =
  26. 26.39.7 × 10 =
  27. 27.464.8 × 100 =
  28. 28.12.02 × 10 =
  29. 29.78.5 ÷ 1000 =
  30. 30.13.37 × 10 =
  31. 31.242.2 × 10 =
  32. 32.29.68 ÷ 10 =
  33. 33.39.11 × 10 =
  34. 34.221.8 ÷ 10 =
  35. 35.18.72 × 100 =
  36. 36.16.57 × 1000 =
  37. 37.3.02 × 1000 =
  38. 38.14.44 ÷ 100 =
  39. 39.386.1 ÷ 100 =
  40. 40.90.7 × 100 =

Answer key

  1. 2.215
  2. 0.04917
  3. 0.01726
  4. 879
  5. 11980
  6. 291.8
  7. 169
  8. 0.0657
  9. 41.39
  10. 0.00344
  11. 3336
  12. 0.04163
  13. 4644
  14. 30590
  15. 192.5
  16. 0.811
  17. 3.195
  18. 692
  19. 3.628
  20. 0.2952
  21. 828
  22. 321.8
  23. 1733
  24. 317400
  25. 3009
  26. 397
  27. 46480
  28. 120.2
  29. 0.0785
  30. 133.7
  31. 2422
  32. 2.968
  33. 391.1
  34. 22.18
  35. 1872
  36. 16570
  37. 3020
  38. 0.1444
  39. 3.861
  40. 9070

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