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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 751 · 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. 1.372.1 ÷ 10 =
  2. 2.258.1 ÷ 100 =
  3. 3.9.84 ÷ 100 =
  4. 4.21.48 ÷ 1000 =
  5. 5.6.9 × 100 =
  6. 6.35.51 ÷ 100 =
  7. 7.167.8 ÷ 1000 =
  8. 8.19.31 ÷ 100 =
  9. 9.191.9 × 10 =
  10. 10.15.78 ÷ 1000 =
  11. 11.35.53 × 10 =
  12. 12.9.45 × 100 =
  13. 13.6.03 × 100 =
  14. 14.19.51 × 100 =
  15. 15.23.1 ÷ 100 =
  16. 16.136.5 × 100 =
  17. 17.289.2 × 1000 =
  18. 18.439.1 ÷ 100 =
  19. 19.465.5 ÷ 1000 =
  20. 20.427.7 × 10 =
  21. 21.254.7 ÷ 1000 =
  22. 22.103.1 × 100 =
  23. 23.41.71 × 10 =
  24. 24.80.4 ÷ 10 =
  25. 25.8.71 × 1000 =
  26. 26.182.9 ÷ 10 =
  27. 27.374.5 ÷ 10 =
  28. 28.46.65 × 10 =
  29. 29.17.7 ÷ 10 =
  30. 30.79.6 ÷ 100 =
  31. 31.398.7 × 1000 =
  32. 32.31.12 × 100 =
  33. 33.16.93 × 10 =
  34. 34.30.66 ÷ 10 =
  35. 35.23.48 × 1000 =
  36. 36.48.22 ÷ 10 =
  37. 37.28.3 × 10 =
  38. 38.276.3 × 10 =
  39. 39.11.31 ÷ 10 =
  40. 40.301.8 ÷ 1000 =

Answer key

  1. 37.21
  2. 2.581
  3. 0.0984
  4. 0.02148
  5. 690
  6. 0.3551
  7. 0.1678
  8. 0.1931
  9. 1919
  10. 0.01578
  11. 355.3
  12. 945
  13. 603
  14. 1951
  15. 0.231
  16. 13650
  17. 289200
  18. 4.391
  19. 0.4655
  20. 4277
  21. 0.2547
  22. 10310
  23. 417.1
  24. 8.04
  25. 8710
  26. 18.29
  27. 37.45
  28. 466.5
  29. 1.77
  30. 0.796
  31. 398700
  32. 3112
  33. 169.3
  34. 3.066
  35. 23480
  36. 4.822
  37. 283
  38. 2763
  39. 1.131
  40. 0.3018

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