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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 106 · 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. 1.234.5 × 1000 =
  2. 2.499.8 × 10 =
  3. 3.372.3 ÷ 10 =
  4. 4.260.3 × 100 =
  5. 5.31.1 × 10 =
  6. 6.345.1 × 1000 =
  7. 7.43.03 × 1000 =
  8. 8.232.5 ÷ 10 =
  9. 9.41.94 ÷ 10 =
  10. 10.456.1 ÷ 100 =
  11. 11.185.4 × 1000 =
  12. 12.13.86 × 100 =
  13. 13.3.07 × 100 =
  14. 14.199.1 ÷ 100 =
  15. 15.20.78 ÷ 10 =
  16. 16.374.6 ÷ 1000 =
  17. 17.109.4 ÷ 10 =
  18. 18.3.62 × 10 =
  19. 19.466.3 × 10 =
  20. 20.49.78 × 10 =
  21. 21.42.89 ÷ 100 =
  22. 22.102.5 × 100 =
  23. 23.155.9 × 10 =
  24. 24.19.31 ÷ 10 =
  25. 25.24.29 × 1000 =
  26. 26.484.2 × 10 =
  27. 27.27.96 × 10 =
  28. 28.46.36 ÷ 10 =
  29. 29.35.45 × 1000 =
  30. 30.385.6 × 10 =
  31. 31.153.6 × 1000 =
  32. 32.16.27 × 100 =
  33. 33.48.43 ÷ 100 =
  34. 34.5.14 × 100 =
  35. 35.15.62 × 100 =
  36. 36.15.11 ÷ 10 =
  37. 37.449.5 ÷ 10 =
  38. 38.5.54 ÷ 1000 =
  39. 39.31.19 × 1000 =
  40. 40.25.71 ÷ 1000 =

Answer key

  1. 234500
  2. 4998
  3. 37.23
  4. 26030
  5. 311
  6. 345100
  7. 43030
  8. 23.25
  9. 4.194
  10. 4.561
  11. 185400
  12. 1386
  13. 307
  14. 1.991
  15. 2.078
  16. 0.3746
  17. 10.94
  18. 36.2
  19. 4663
  20. 497.8
  21. 0.4289
  22. 10250
  23. 1559
  24. 1.931
  25. 24290
  26. 4842
  27. 279.6
  28. 4.636
  29. 35450
  30. 3856
  31. 153600
  32. 1627
  33. 0.4843
  34. 514
  35. 1562
  36. 1.511
  37. 44.95
  38. 0.00554
  39. 31190
  40. 0.02571

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