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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 805 · 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. 1.34 × 50 =
  2. 2.16 × 50 =
  3. 3.86 × 50 =
  4. 4.65 × 5 =
  5. 5.34 × 50 =
  6. 6.71 × 5 =
  7. 7.23 × 50 =
  8. 8.38 × 5 =
  9. 9.12 × 5 =
  10. 10.90 × 5 =
  11. 11.83 × 5 =
  12. 12.52 × 5 =
  13. 13.62 × 5 =
  14. 14.74 × 5 =
  15. 15.22 × 5 =
  16. 16.85 × 5 =
  17. 17.76 × 50 =
  18. 18.95 × 50 =
  19. 19.75 × 50 =
  20. 20.94 × 5 =
  21. 21.66 × 50 =
  22. 22.79 × 50 =
  23. 23.92 × 50 =
  24. 24.64 × 5 =
  25. 25.18 × 50 =
  26. 26.76 × 50 =
  27. 27.40 × 50 =
  28. 28.63 × 50 =
  29. 29.33 × 50 =
  30. 30.79 × 5 =
  31. 31.62 × 50 =
  32. 32.86 × 50 =
  33. 33.26 × 5 =
  34. 34.82 × 50 =
  35. 35.63 × 5 =
  36. 36.98 × 5 =
  37. 37.64 × 50 =
  38. 38.50 × 50 =
  39. 39.25 × 5 =
  40. 40.30 × 5 =

Answer key

  1. 1700
  2. 800
  3. 4300
  4. 325
  5. 1700
  6. 355
  7. 1150
  8. 190
  9. 60
  10. 450
  11. 415
  12. 260
  13. 310
  14. 370
  15. 110
  16. 425
  17. 3800
  18. 4750
  19. 3750
  20. 470
  21. 3300
  22. 3950
  23. 4600
  24. 320
  25. 900
  26. 3800
  27. 2000
  28. 3150
  29. 1650
  30. 395
  31. 3100
  32. 4300
  33. 130
  34. 4100
  35. 315
  36. 490
  37. 3200
  38. 2500
  39. 125
  40. 150

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