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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 735 · 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. 1.367.6 × 1000 =
  2. 2.186.6 × 10 =
  3. 3.453.7 ÷ 1000 =
  4. 4.0.21 ÷ 100 =
  5. 5.38.67 × 1000 =
  6. 6.429.7 × 1000 =
  7. 7.105.5 × 10 =
  8. 8.110.4 × 1000 =
  9. 9.140.7 ÷ 10 =
  10. 10.31.06 × 1000 =
  11. 11.39.16 × 100 =
  12. 12.163.7 × 1000 =
  13. 13.22.93 × 10 =
  14. 14.32.03 ÷ 1000 =
  15. 15.18.59 × 100 =
  16. 16.332.1 × 100 =
  17. 17.51.1 × 100 =
  18. 18.37.33 ÷ 1000 =
  19. 19.336.1 × 100 =
  20. 20.48.51 ÷ 1000 =
  21. 21.82.7 ÷ 1000 =
  22. 22.174.9 ÷ 1000 =
  23. 23.261.7 ÷ 10 =
  24. 24.329.4 × 100 =
  25. 25.415.4 ÷ 10 =
  26. 26.6.34 ÷ 1000 =
  27. 27.283.1 ÷ 100 =
  28. 28.443.6 ÷ 1000 =
  29. 29.341.4 ÷ 10 =
  30. 30.371.2 × 1000 =
  31. 31.9.31 ÷ 10 =
  32. 32.42.76 × 1000 =
  33. 33.202.9 × 10 =
  34. 34.19.21 ÷ 100 =
  35. 35.23.94 × 10 =
  36. 36.428.1 × 1000 =
  37. 37.11.73 × 1000 =
  38. 38.1.16 × 1000 =
  39. 39.64.4 ÷ 100 =
  40. 40.16.52 × 1000 =

Answer key

  1. 367600
  2. 1866
  3. 0.4537
  4. 0.0021
  5. 38670
  6. 429700
  7. 1055
  8. 110400
  9. 14.07
  10. 31060
  11. 3916
  12. 163700
  13. 229.3
  14. 0.03203
  15. 1859
  16. 33210
  17. 5110
  18. 0.03733
  19. 33610
  20. 0.04851
  21. 0.0827
  22. 0.1749
  23. 26.17
  24. 32940
  25. 41.54
  26. 0.00634
  27. 2.831
  28. 0.4436
  29. 34.14
  30. 371200
  31. 0.931
  32. 42760
  33. 2029
  34. 0.1921
  35. 239.4
  36. 428100
  37. 11730
  38. 1160
  39. 0.644
  40. 16520

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