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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 7 · 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. 1.37 × 5 =
  2. 2.44 × 5 =
  3. 3.76 × 50 =
  4. 4.74 × 50 =
  5. 5.15 × 50 =
  6. 6.32 × 5 =
  7. 7.48 × 5 =
  8. 8.61 × 50 =
  9. 9.47 × 50 =
  10. 10.25 × 5 =
  11. 11.12 × 50 =
  12. 12.66 × 5 =
  13. 13.49 × 5 =
  14. 14.42 × 50 =
  15. 15.61 × 50 =
  16. 16.82 × 5 =
  17. 17.63 × 5 =
  18. 18.87 × 50 =
  19. 19.96 × 5 =
  20. 20.65 × 50 =
  21. 21.80 × 50 =
  22. 22.89 × 5 =
  23. 23.92 × 5 =
  24. 24.87 × 50 =
  25. 25.47 × 5 =
  26. 26.61 × 5 =
  27. 27.37 × 5 =
  28. 28.45 × 5 =
  29. 29.87 × 5 =
  30. 30.83 × 5 =
  31. 31.42 × 50 =
  32. 32.49 × 5 =
  33. 33.78 × 5 =
  34. 34.63 × 5 =
  35. 35.31 × 5 =
  36. 36.70 × 5 =
  37. 37.87 × 5 =
  38. 38.85 × 5 =
  39. 39.16 × 5 =
  40. 40.54 × 5 =

Answer key

  1. 185
  2. 220
  3. 3800
  4. 3700
  5. 750
  6. 160
  7. 240
  8. 3050
  9. 2350
  10. 125
  11. 600
  12. 330
  13. 245
  14. 2100
  15. 3050
  16. 410
  17. 315
  18. 4350
  19. 480
  20. 3250
  21. 4000
  22. 445
  23. 460
  24. 4350
  25. 235
  26. 305
  27. 185
  28. 225
  29. 435
  30. 415
  31. 2100
  32. 245
  33. 390
  34. 315
  35. 155
  36. 350
  37. 435
  38. 425
  39. 80
  40. 270

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