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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 553 · 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. 1.31.4 ÷ 10 =
  2. 2.9.86 ÷ 10 =
  3. 3.54.5 × 10 =
  4. 4.49.88 ÷ 1000 =
  5. 5.34.21 × 10 =
  6. 6.279.6 × 100 =
  7. 7.27.21 ÷ 100 =
  8. 8.32.23 × 100 =
  9. 9.413.4 × 100 =
  10. 10.42.79 ÷ 100 =
  11. 11.99.1 ÷ 1000 =
  12. 12.14.45 ÷ 1000 =
  13. 13.16.28 × 100 =
  14. 14.7.46 × 1000 =
  15. 15.76.4 × 10 =
  16. 16.242.8 × 1000 =
  17. 17.318.4 ÷ 10 =
  18. 18.136.7 × 1000 =
  19. 19.214.1 ÷ 100 =
  20. 20.47.91 ÷ 100 =
  21. 21.57.4 × 10 =
  22. 22.139.5 × 100 =
  23. 23.45.89 × 10 =
  24. 24.40.94 ÷ 1000 =
  25. 25.80.1 ÷ 100 =
  26. 26.40.52 × 1000 =
  27. 27.30.91 ÷ 1000 =
  28. 28.61.1 ÷ 1000 =
  29. 29.421.8 × 100 =
  30. 30.17.81 × 1000 =
  31. 31.77.9 × 100 =
  32. 32.19.11 × 10 =
  33. 33.0.32 × 10 =
  34. 34.5.01 × 100 =
  35. 35.36.56 ÷ 1000 =
  36. 36.243.2 × 100 =
  37. 37.337.6 × 10 =
  38. 38.12.55 ÷ 100 =
  39. 39.263.3 ÷ 10 =
  40. 40.138.6 ÷ 100 =

Answer key

  1. 3.14
  2. 0.986
  3. 545
  4. 0.04988
  5. 342.1
  6. 27960
  7. 0.2721
  8. 3223
  9. 41340
  10. 0.4279
  11. 0.0991
  12. 0.01445
  13. 1628
  14. 7460
  15. 764
  16. 242800
  17. 31.84
  18. 136700
  19. 2.141
  20. 0.4791
  21. 574
  22. 13950
  23. 458.9
  24. 0.04094
  25. 0.801
  26. 40520
  27. 0.03091
  28. 0.0611
  29. 42180
  30. 17810
  31. 7790
  32. 191.1
  33. 3.2
  34. 501
  35. 0.03656
  36. 24320
  37. 3376
  38. 0.1255
  39. 26.33
  40. 1.386

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