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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 529 · 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. 1.317.5 ÷ 100 =
  2. 2.39.76 ÷ 10 =
  3. 3.306.4 ÷ 100 =
  4. 4.57.1 × 10 =
  5. 5.325.5 ÷ 100 =
  6. 6.323.3 × 100 =
  7. 7.0.22 × 10 =
  8. 8.13.61 ÷ 10 =
  9. 9.353.6 × 10 =
  10. 10.334.2 × 1000 =
  11. 11.291.8 × 100 =
  12. 12.4.71 × 1000 =
  13. 13.379.1 × 1000 =
  14. 14.6.3 ÷ 10 =
  15. 15.0.96 ÷ 100 =
  16. 16.12.11 × 10 =
  17. 17.433.9 × 10 =
  18. 18.19.5 × 100 =
  19. 19.33.51 ÷ 1000 =
  20. 20.203.9 ÷ 10 =
  21. 21.449.1 × 1000 =
  22. 22.488.3 ÷ 1000 =
  23. 23.31.11 × 100 =
  24. 24.334.4 ÷ 100 =
  25. 25.375.8 × 10 =
  26. 26.439.1 × 10 =
  27. 27.105.2 × 1000 =
  28. 28.418.8 ÷ 100 =
  29. 29.7.16 × 10 =
  30. 30.3.89 × 100 =
  31. 31.310.2 × 10 =
  32. 32.117.2 × 100 =
  33. 33.20.78 ÷ 100 =
  34. 34.14.02 ÷ 10 =
  35. 35.7.97 ÷ 100 =
  36. 36.45.66 ÷ 100 =
  37. 37.123.6 ÷ 100 =
  38. 38.48.61 × 100 =
  39. 39.312.2 ÷ 1000 =
  40. 40.41.73 ÷ 1000 =

Answer key

  1. 3.175
  2. 3.976
  3. 3.064
  4. 571
  5. 3.255
  6. 32330
  7. 2.2
  8. 1.361
  9. 3536
  10. 334200
  11. 29180
  12. 4710
  13. 379100
  14. 0.63
  15. 0.0096
  16. 121.1
  17. 4339
  18. 1950
  19. 0.03351
  20. 20.39
  21. 449100
  22. 0.4883
  23. 3111
  24. 3.344
  25. 3758
  26. 4391
  27. 105200
  28. 4.188
  29. 71.6
  30. 389
  31. 3102
  32. 11720
  33. 0.2078
  34. 1.402
  35. 0.0797
  36. 0.4566
  37. 1.236
  38. 4861
  39. 0.3122
  40. 0.04173

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