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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 96 · 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. 1.56 × 50 =
  2. 2.22 × 50 =
  3. 3.90 × 5 =
  4. 4.47 × 5 =
  5. 5.56 × 5 =
  6. 6.28 × 50 =
  7. 7.47 × 5 =
  8. 8.48 × 5 =
  9. 9.44 × 50 =
  10. 10.35 × 50 =
  11. 11.78 × 50 =
  12. 12.32 × 50 =
  13. 13.89 × 5 =
  14. 14.98 × 5 =
  15. 15.58 × 50 =
  16. 16.21 × 5 =
  17. 17.35 × 50 =
  18. 18.21 × 50 =
  19. 19.26 × 5 =
  20. 20.76 × 50 =
  21. 21.48 × 50 =
  22. 22.83 × 5 =
  23. 23.14 × 50 =
  24. 24.12 × 50 =
  25. 25.45 × 5 =
  26. 26.26 × 5 =
  27. 27.90 × 5 =
  28. 28.54 × 50 =
  29. 29.77 × 50 =
  30. 30.69 × 5 =
  31. 31.22 × 50 =
  32. 32.18 × 50 =
  33. 33.51 × 5 =
  34. 34.84 × 50 =
  35. 35.50 × 50 =
  36. 36.89 × 5 =
  37. 37.57 × 50 =
  38. 38.60 × 5 =
  39. 39.19 × 50 =
  40. 40.34 × 5 =

Answer key

  1. 2800
  2. 1100
  3. 450
  4. 235
  5. 280
  6. 1400
  7. 235
  8. 240
  9. 2200
  10. 1750
  11. 3900
  12. 1600
  13. 445
  14. 490
  15. 2900
  16. 105
  17. 1750
  18. 1050
  19. 130
  20. 3800
  21. 2400
  22. 415
  23. 700
  24. 600
  25. 225
  26. 130
  27. 450
  28. 2700
  29. 3850
  30. 345
  31. 1100
  32. 900
  33. 255
  34. 4200
  35. 2500
  36. 445
  37. 2850
  38. 300
  39. 950
  40. 170

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