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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 124 · 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. 1.55 × 50 =
  2. 2.89 × 5 =
  3. 3.75 × 50 =
  4. 4.83 × 5 =
  5. 5.28 × 50 =
  6. 6.87 × 50 =
  7. 7.20 × 5 =
  8. 8.17 × 50 =
  9. 9.44 × 50 =
  10. 10.16 × 50 =
  11. 11.76 × 50 =
  12. 12.49 × 50 =
  13. 13.77 × 5 =
  14. 14.95 × 50 =
  15. 15.13 × 5 =
  16. 16.22 × 5 =
  17. 17.90 × 50 =
  18. 18.94 × 50 =
  19. 19.58 × 5 =
  20. 20.50 × 50 =
  21. 21.18 × 50 =
  22. 22.39 × 5 =
  23. 23.54 × 5 =
  24. 24.12 × 50 =
  25. 25.76 × 50 =
  26. 26.29 × 50 =
  27. 27.28 × 5 =
  28. 28.55 × 5 =
  29. 29.83 × 5 =
  30. 30.39 × 50 =
  31. 31.63 × 50 =
  32. 32.75 × 5 =
  33. 33.30 × 5 =
  34. 34.72 × 5 =
  35. 35.28 × 50 =
  36. 36.60 × 50 =
  37. 37.57 × 50 =
  38. 38.87 × 50 =
  39. 39.72 × 5 =
  40. 40.27 × 50 =

Answer key

  1. 2750
  2. 445
  3. 3750
  4. 415
  5. 1400
  6. 4350
  7. 100
  8. 850
  9. 2200
  10. 800
  11. 3800
  12. 2450
  13. 385
  14. 4750
  15. 65
  16. 110
  17. 4500
  18. 4700
  19. 290
  20. 2500
  21. 900
  22. 195
  23. 270
  24. 600
  25. 3800
  26. 1450
  27. 140
  28. 275
  29. 415
  30. 1950
  31. 3150
  32. 375
  33. 150
  34. 360
  35. 1400
  36. 3000
  37. 2850
  38. 4350
  39. 360
  40. 1350

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