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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 482 · 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. 1.190.7 × 10 =
  2. 2.35.2 ÷ 10 =
  3. 3.130.5 ÷ 100 =
  4. 4.186.1 × 1000 =
  5. 5.19.51 × 1000 =
  6. 6.164.4 × 1000 =
  7. 7.124.1 ÷ 10 =
  8. 8.210.7 ÷ 10 =
  9. 9.38.04 ÷ 10 =
  10. 10.28.37 ÷ 100 =
  11. 11.31.52 × 100 =
  12. 12.42.51 ÷ 100 =
  13. 13.318.4 ÷ 1000 =
  14. 14.310.9 ÷ 1000 =
  15. 15.33.5 ÷ 1000 =
  16. 16.20.82 ÷ 100 =
  17. 17.16.62 ÷ 1000 =
  18. 18.28.72 × 10 =
  19. 19.49.31 ÷ 10 =
  20. 20.69.3 × 1000 =
  21. 21.393.1 ÷ 10 =
  22. 22.89.1 ÷ 100 =
  23. 23.153.1 ÷ 100 =
  24. 24.30.3 × 100 =
  25. 25.6.7 ÷ 10 =
  26. 26.0.79 ÷ 10 =
  27. 27.126.3 × 1000 =
  28. 28.181.7 × 1000 =
  29. 29.46.19 ÷ 10 =
  30. 30.24.87 ÷ 100 =
  31. 31.39.45 ÷ 10 =
  32. 32.68.8 × 1000 =
  33. 33.31.34 × 10 =
  34. 34.413.1 × 100 =
  35. 35.7.88 ÷ 1000 =
  36. 36.121.2 ÷ 1000 =
  37. 37.46.1 × 100 =
  38. 38.48.81 × 100 =
  39. 39.25.97 × 10 =
  40. 40.479.1 ÷ 100 =

Answer key

  1. 1907
  2. 3.52
  3. 1.305
  4. 186100
  5. 19510
  6. 164400
  7. 12.41
  8. 21.07
  9. 3.804
  10. 0.2837
  11. 3152
  12. 0.4251
  13. 0.3184
  14. 0.3109
  15. 0.0335
  16. 0.2082
  17. 0.01662
  18. 287.2
  19. 4.931
  20. 69300
  21. 39.31
  22. 0.891
  23. 1.531
  24. 3030
  25. 0.67
  26. 0.079
  27. 126300
  28. 181700
  29. 4.619
  30. 0.2487
  31. 3.945
  32. 68800
  33. 313.4
  34. 41310
  35. 0.00788
  36. 0.1212
  37. 4610
  38. 4881
  39. 259.7
  40. 4.791

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