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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 285 · 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. 1.0.16 ÷ 1000 =
  2. 2.272.3 × 1000 =
  3. 3.360.3 ÷ 100 =
  4. 4.49.73 × 1000 =
  5. 5.218.8 ÷ 10 =
  6. 6.206.7 × 1000 =
  7. 7.52.8 × 100 =
  8. 8.48.58 ÷ 10 =
  9. 9.12.21 ÷ 1000 =
  10. 10.25.93 × 1000 =
  11. 11.29.8 × 10 =
  12. 12.27.96 ÷ 1000 =
  13. 13.11.73 × 100 =
  14. 14.16.79 ÷ 1000 =
  15. 15.437.8 × 100 =
  16. 16.58.1 ÷ 1000 =
  17. 17.15.55 ÷ 10 =
  18. 18.40.45 × 100 =
  19. 19.276.3 × 10 =
  20. 20.8.55 ÷ 10 =
  21. 21.30.43 ÷ 10 =
  22. 22.5.19 × 10 =
  23. 23.109.2 × 1000 =
  24. 24.2.33 × 1000 =
  25. 25.448.1 ÷ 100 =
  26. 26.32.33 ÷ 100 =
  27. 27.478.9 ÷ 100 =
  28. 28.146.1 × 100 =
  29. 29.365.8 × 100 =
  30. 30.119.4 ÷ 10 =
  31. 31.375.1 × 10 =
  32. 32.47.66 ÷ 100 =
  33. 33.18.11 × 1000 =
  34. 34.306.4 ÷ 10 =
  35. 35.288.2 ÷ 100 =
  36. 36.37.03 × 10 =
  37. 37.4.18 ÷ 1000 =
  38. 38.489.8 × 1000 =
  39. 39.405.1 × 10 =
  40. 40.34.65 ÷ 1000 =

Answer key

  1. 0.00016
  2. 272300
  3. 3.603
  4. 49730
  5. 21.88
  6. 206700
  7. 5280
  8. 4.858
  9. 0.01221
  10. 25930
  11. 298
  12. 0.02796
  13. 1173
  14. 0.01679
  15. 43780
  16. 0.0581
  17. 1.555
  18. 4045
  19. 2763
  20. 0.855
  21. 3.043
  22. 51.9
  23. 109200
  24. 2330
  25. 4.481
  26. 0.3233
  27. 4.789
  28. 14610
  29. 36580
  30. 11.94
  31. 3751
  32. 0.4766
  33. 18110
  34. 30.64
  35. 2.882
  36. 370.3
  37. 0.00418
  38. 489800
  39. 4051
  40. 0.03465

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