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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 436 · 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. 2.89 × 50 =
  3. 3.97 × 5 =
  4. 4.42 × 5 =
  5. 5.37 × 50 =
  6. 6.43 × 5 =
  7. 7.45 × 50 =
  8. 8.30 × 5 =
  9. 9.54 × 5 =
  10. 10.98 × 5 =
  11. 11.15 × 5 =
  12. 12.27 × 50 =
  13. 13.91 × 5 =
  14. 14.58 × 5 =
  15. 15.91 × 50 =
  16. 16.57 × 5 =
  17. 17.19 × 50 =
  18. 18.86 × 5 =
  19. 19.18 × 50 =
  20. 20.92 × 5 =
  21. 21.74 × 5 =
  22. 22.89 × 5 =
  23. 23.34 × 5 =
  24. 24.22 × 50 =
  25. 25.37 × 5 =
  26. 26.64 × 50 =
  27. 27.94 × 5 =
  28. 28.42 × 50 =
  29. 29.24 × 50 =
  30. 30.83 × 5 =
  31. 31.78 × 5 =
  32. 32.33 × 5 =
  33. 33.72 × 50 =
  34. 34.75 × 5 =
  35. 35.81 × 5 =
  36. 36.27 × 50 =
  37. 37.31 × 5 =
  38. 38.21 × 50 =
  39. 39.84 × 50 =
  40. 40.91 × 50 =

Answer key

  1. 1250
  2. 4450
  3. 485
  4. 210
  5. 1850
  6. 215
  7. 2250
  8. 150
  9. 270
  10. 490
  11. 75
  12. 1350
  13. 455
  14. 290
  15. 4550
  16. 285
  17. 950
  18. 430
  19. 900
  20. 460
  21. 370
  22. 445
  23. 170
  24. 1100
  25. 185
  26. 3200
  27. 470
  28. 2100
  29. 1200
  30. 415
  31. 390
  32. 165
  33. 3600
  34. 375
  35. 405
  36. 1350
  37. 155
  38. 1050
  39. 4200
  40. 4550

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