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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 670 · 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. 1.108.5 ÷ 100 =
  2. 2.2.26 × 100 =
  3. 3.472.1 × 100 =
  4. 4.406.8 × 10 =
  5. 5.177.6 ÷ 1000 =
  6. 6.378.7 ÷ 100 =
  7. 7.49.82 ÷ 1000 =
  8. 8.265.8 ÷ 100 =
  9. 9.499.4 ÷ 1000 =
  10. 10.279.9 × 1000 =
  11. 11.398.4 × 1000 =
  12. 12.346.4 ÷ 100 =
  13. 13.5.33 × 100 =
  14. 14.2.5 × 1000 =
  15. 15.34.35 ÷ 1000 =
  16. 16.48.35 × 10 =
  17. 17.33.68 ÷ 1000 =
  18. 18.7.28 ÷ 100 =
  19. 19.61.5 × 10 =
  20. 20.44.99 × 100 =
  21. 21.8.01 ÷ 10 =
  22. 22.51.3 × 10 =
  23. 23.464.1 × 10 =
  24. 24.36.26 ÷ 10 =
  25. 25.418.1 ÷ 1000 =
  26. 26.58.2 ÷ 1000 =
  27. 27.5.11 ÷ 10 =
  28. 28.47.11 ÷ 10 =
  29. 29.438.4 ÷ 1000 =
  30. 30.5.36 × 100 =
  31. 31.19.67 × 10 =
  32. 32.491.9 × 1000 =
  33. 33.191.6 × 100 =
  34. 34.12.46 × 100 =
  35. 35.230.7 × 10 =
  36. 36.6.59 × 100 =
  37. 37.102.5 × 100 =
  38. 38.227.4 ÷ 1000 =
  39. 39.7.96 × 10 =
  40. 40.5.95 ÷ 100 =

Answer key

  1. 1.085
  2. 226
  3. 47210
  4. 4068
  5. 0.1776
  6. 3.787
  7. 0.04982
  8. 2.658
  9. 0.4994
  10. 279900
  11. 398400
  12. 3.464
  13. 533
  14. 2500
  15. 0.03435
  16. 483.5
  17. 0.03368
  18. 0.0728
  19. 615
  20. 4499
  21. 0.801
  22. 513
  23. 4641
  24. 3.626
  25. 0.4181
  26. 0.0582
  27. 0.511
  28. 4.711
  29. 0.4384
  30. 536
  31. 196.7
  32. 491900
  33. 19160
  34. 1246
  35. 2307
  36. 659
  37. 10250
  38. 0.2274
  39. 79.6
  40. 0.0595

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