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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 57 · 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. 1.82 × 5 =
  2. 2.97 × 50 =
  3. 3.12 × 5 =
  4. 4.97 × 50 =
  5. 5.59 × 5 =
  6. 6.92 × 5 =
  7. 7.55 × 5 =
  8. 8.70 × 5 =
  9. 9.35 × 50 =
  10. 10.28 × 5 =
  11. 11.62 × 5 =
  12. 12.39 × 5 =
  13. 13.78 × 50 =
  14. 14.75 × 50 =
  15. 15.45 × 50 =
  16. 16.31 × 50 =
  17. 17.89 × 5 =
  18. 18.48 × 50 =
  19. 19.67 × 50 =
  20. 20.97 × 50 =
  21. 21.57 × 5 =
  22. 22.24 × 50 =
  23. 23.81 × 5 =
  24. 24.95 × 50 =
  25. 25.77 × 50 =
  26. 26.82 × 5 =
  27. 27.47 × 50 =
  28. 28.91 × 50 =
  29. 29.69 × 5 =
  30. 30.90 × 50 =
  31. 31.17 × 5 =
  32. 32.29 × 50 =
  33. 33.50 × 50 =
  34. 34.64 × 50 =
  35. 35.37 × 50 =
  36. 36.15 × 50 =
  37. 37.27 × 5 =
  38. 38.37 × 5 =
  39. 39.91 × 5 =
  40. 40.55 × 50 =

Answer key

  1. 410
  2. 4850
  3. 60
  4. 4850
  5. 295
  6. 460
  7. 275
  8. 350
  9. 1750
  10. 140
  11. 310
  12. 195
  13. 3900
  14. 3750
  15. 2250
  16. 1550
  17. 445
  18. 2400
  19. 3350
  20. 4850
  21. 285
  22. 1200
  23. 405
  24. 4750
  25. 3850
  26. 410
  27. 2350
  28. 4550
  29. 345
  30. 4500
  31. 85
  32. 1450
  33. 2500
  34. 3200
  35. 1850
  36. 750
  37. 135
  38. 185
  39. 455
  40. 2750

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