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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 148 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.91 × 5 =
  2. 2.38 × 5 =
  3. 3.49 × 50 =
  4. 4.56 × 50 =
  5. 5.28 × 50 =
  6. 6.39 × 5 =
  7. 7.49 × 5 =
  8. 8.25 × 50 =
  9. 9.15 × 5 =
  10. 10.20 × 50 =
  11. 11.75 × 5 =
  12. 12.31 × 5 =
  13. 13.34 × 5 =
  14. 14.36 × 5 =
  15. 15.27 × 5 =
  16. 16.68 × 5 =
  17. 17.68 × 5 =
  18. 18.52 × 5 =
  19. 19.36 × 50 =
  20. 20.60 × 5 =
  21. 21.66 × 5 =
  22. 22.83 × 5 =
  23. 23.89 × 50 =
  24. 24.76 × 5 =
  25. 25.54 × 50 =
  26. 26.59 × 5 =
  27. 27.14 × 5 =
  28. 28.17 × 5 =
  29. 29.98 × 50 =
  30. 30.41 × 50 =
  31. 31.28 × 5 =
  32. 32.83 × 5 =
  33. 33.13 × 50 =
  34. 34.76 × 50 =
  35. 35.13 × 50 =
  36. 36.45 × 5 =
  37. 37.58 × 5 =
  38. 38.32 × 5 =
  39. 39.13 × 5 =
  40. 40.52 × 5 =

Answer key

  1. 455
  2. 190
  3. 2450
  4. 2800
  5. 1400
  6. 195
  7. 245
  8. 1250
  9. 75
  10. 1000
  11. 375
  12. 155
  13. 170
  14. 180
  15. 135
  16. 340
  17. 340
  18. 260
  19. 1800
  20. 300
  21. 330
  22. 415
  23. 4450
  24. 380
  25. 2700
  26. 295
  27. 70
  28. 85
  29. 4900
  30. 2050
  31. 140
  32. 415
  33. 650
  34. 3800
  35. 650
  36. 225
  37. 290
  38. 160
  39. 65
  40. 260

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