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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 410 · 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. 1.25 × 50 =
  2. 2.65 × 50 =
  3. 3.94 × 5 =
  4. 4.13 × 5 =
  5. 5.14 × 5 =
  6. 6.22 × 5 =
  7. 7.13 × 50 =
  8. 8.89 × 5 =
  9. 9.50 × 50 =
  10. 10.97 × 50 =
  11. 11.16 × 50 =
  12. 12.53 × 5 =
  13. 13.83 × 50 =
  14. 14.31 × 5 =
  15. 15.21 × 5 =
  16. 16.31 × 50 =
  17. 17.79 × 50 =
  18. 18.52 × 50 =
  19. 19.98 × 5 =
  20. 20.36 × 5 =
  21. 21.60 × 50 =
  22. 22.97 × 5 =
  23. 23.90 × 50 =
  24. 24.33 × 5 =
  25. 25.78 × 5 =
  26. 26.56 × 5 =
  27. 27.29 × 5 =
  28. 28.32 × 5 =
  29. 29.52 × 5 =
  30. 30.82 × 5 =
  31. 31.55 × 50 =
  32. 32.74 × 5 =
  33. 33.54 × 50 =
  34. 34.79 × 5 =
  35. 35.42 × 5 =
  36. 36.56 × 50 =
  37. 37.83 × 5 =
  38. 38.48 × 5 =
  39. 39.71 × 5 =
  40. 40.15 × 50 =

Answer key

  1. 1250
  2. 3250
  3. 470
  4. 65
  5. 70
  6. 110
  7. 650
  8. 445
  9. 2500
  10. 4850
  11. 800
  12. 265
  13. 4150
  14. 155
  15. 105
  16. 1550
  17. 3950
  18. 2600
  19. 490
  20. 180
  21. 3000
  22. 485
  23. 4500
  24. 165
  25. 390
  26. 280
  27. 145
  28. 160
  29. 260
  30. 410
  31. 2750
  32. 370
  33. 2700
  34. 395
  35. 210
  36. 2800
  37. 415
  38. 240
  39. 355
  40. 750

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