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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 522 · 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. 1.39 × 50 =
  2. 2.88 × 5 =
  3. 3.42 × 50 =
  4. 4.88 × 5 =
  5. 5.30 × 50 =
  6. 6.78 × 5 =
  7. 7.65 × 50 =
  8. 8.18 × 50 =
  9. 9.75 × 5 =
  10. 10.83 × 5 =
  11. 11.31 × 50 =
  12. 12.63 × 5 =
  13. 13.41 × 5 =
  14. 14.54 × 50 =
  15. 15.50 × 5 =
  16. 16.66 × 5 =
  17. 17.20 × 50 =
  18. 18.75 × 5 =
  19. 19.51 × 50 =
  20. 20.41 × 50 =
  21. 21.57 × 5 =
  22. 22.91 × 50 =
  23. 23.84 × 5 =
  24. 24.49 × 50 =
  25. 25.82 × 5 =
  26. 26.59 × 5 =
  27. 27.91 × 5 =
  28. 28.76 × 50 =
  29. 29.97 × 50 =
  30. 30.34 × 5 =
  31. 31.37 × 5 =
  32. 32.88 × 50 =
  33. 33.94 × 50 =
  34. 34.15 × 5 =
  35. 35.61 × 50 =
  36. 36.62 × 50 =
  37. 37.37 × 50 =
  38. 38.18 × 5 =
  39. 39.92 × 5 =
  40. 40.32 × 50 =

Answer key

  1. 1950
  2. 440
  3. 2100
  4. 440
  5. 1500
  6. 390
  7. 3250
  8. 900
  9. 375
  10. 415
  11. 1550
  12. 315
  13. 205
  14. 2700
  15. 250
  16. 330
  17. 1000
  18. 375
  19. 2550
  20. 2050
  21. 285
  22. 4550
  23. 420
  24. 2450
  25. 410
  26. 295
  27. 455
  28. 3800
  29. 4850
  30. 170
  31. 185
  32. 4400
  33. 4700
  34. 75
  35. 3050
  36. 3100
  37. 1850
  38. 90
  39. 460
  40. 1600

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