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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 742 · 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. 1.79.4 ÷ 10 =
  2. 2.43.11 × 1000 =
  3. 3.455.1 × 10 =
  4. 4.3.95 × 10 =
  5. 5.27.5 × 10 =
  6. 6.386.5 ÷ 100 =
  7. 7.326.3 × 1000 =
  8. 8.299.1 × 10 =
  9. 9.15.86 ÷ 10 =
  10. 10.42.3 ÷ 100 =
  11. 11.350.6 × 1000 =
  12. 12.43.16 ÷ 100 =
  13. 13.355.4 ÷ 10 =
  14. 14.76.7 × 10 =
  15. 15.31.39 × 10 =
  16. 16.330.1 × 1000 =
  17. 17.15.96 ÷ 1000 =
  18. 18.42.74 × 100 =
  19. 19.59.1 × 1000 =
  20. 20.41.31 × 1000 =
  21. 21.47.46 ÷ 1000 =
  22. 22.49.91 × 10 =
  23. 23.28.55 × 10 =
  24. 24.330.6 ÷ 100 =
  25. 25.4.93 ÷ 1000 =
  26. 26.43.61 ÷ 10 =
  27. 27.145.1 ÷ 1000 =
  28. 28.0.16 ÷ 1000 =
  29. 29.331.8 ÷ 10 =
  30. 30.2.27 × 100 =
  31. 31.493.8 × 100 =
  32. 32.17.48 × 10 =
  33. 33.38.47 ÷ 100 =
  34. 34.353.1 ÷ 100 =
  35. 35.456.3 × 100 =
  36. 36.432.7 ÷ 1000 =
  37. 37.143.6 ÷ 100 =
  38. 38.371.1 ÷ 100 =
  39. 39.357.2 × 10 =
  40. 40.399.6 ÷ 1000 =

Answer key

  1. 7.94
  2. 43110
  3. 4551
  4. 39.5
  5. 275
  6. 3.865
  7. 326300
  8. 2991
  9. 1.586
  10. 0.423
  11. 350600
  12. 0.4316
  13. 35.54
  14. 767
  15. 313.9
  16. 330100
  17. 0.01596
  18. 4274
  19. 59100
  20. 41310
  21. 0.04746
  22. 499.1
  23. 285.5
  24. 3.306
  25. 0.00493
  26. 4.361
  27. 0.1451
  28. 0.00016
  29. 33.18
  30. 227
  31. 49380
  32. 174.8
  33. 0.3847
  34. 3.531
  35. 45630
  36. 0.4327
  37. 1.436
  38. 3.711
  39. 3572
  40. 0.3996

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