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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 554 · 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. 1.99.7 ÷ 10 =
  2. 2.35.16 × 10 =
  3. 3.304.3 × 10 =
  4. 4.2.38 × 10 =
  5. 5.12.47 × 1000 =
  6. 6.10.5 × 10 =
  7. 7.11.86 ÷ 10 =
  8. 8.48.88 ÷ 10 =
  9. 9.76.9 ÷ 100 =
  10. 10.159.8 × 100 =
  11. 11.337.4 × 1000 =
  12. 12.50.2 ÷ 10 =
  13. 13.16.75 ÷ 100 =
  14. 14.383.5 ÷ 10 =
  15. 15.412.8 × 1000 =
  16. 16.76.8 × 1000 =
  17. 17.305.7 ÷ 10 =
  18. 18.116.1 ÷ 10 =
  19. 19.9.82 × 1000 =
  20. 20.7.9 ÷ 10 =
  21. 21.46.89 ÷ 10 =
  22. 22.445.2 ÷ 10 =
  23. 23.319.5 × 10 =
  24. 24.19.89 × 100 =
  25. 25.154.2 × 1000 =
  26. 26.430.7 × 1000 =
  27. 27.35.29 × 100 =
  28. 28.360.9 × 100 =
  29. 29.317.1 × 10 =
  30. 30.260.3 ÷ 1000 =
  31. 31.33.21 ÷ 1000 =
  32. 32.33.61 × 10 =
  33. 33.34.68 ÷ 10 =
  34. 34.61.2 × 100 =
  35. 35.22.9 ÷ 1000 =
  36. 36.69.7 × 10 =
  37. 37.33.56 ÷ 10 =
  38. 38.402.5 × 100 =
  39. 39.416.2 × 10 =
  40. 40.402.7 ÷ 100 =

Answer key

  1. 9.97
  2. 351.6
  3. 3043
  4. 23.8
  5. 12470
  6. 105
  7. 1.186
  8. 4.888
  9. 0.769
  10. 15980
  11. 337400
  12. 5.02
  13. 0.1675
  14. 38.35
  15. 412800
  16. 76800
  17. 30.57
  18. 11.61
  19. 9820
  20. 0.79
  21. 4.689
  22. 44.52
  23. 3195
  24. 1989
  25. 154200
  26. 430700
  27. 3529
  28. 36090
  29. 3171
  30. 0.2603
  31. 0.03321
  32. 336.1
  33. 3.468
  34. 6120
  35. 0.0229
  36. 697
  37. 3.356
  38. 40250
  39. 4162
  40. 4.027

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