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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 608 · 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. 1.50 × 50 =
  2. 2.54 × 50 =
  3. 3.71 × 50 =
  4. 4.42 × 5 =
  5. 5.15 × 50 =
  6. 6.20 × 5 =
  7. 7.21 × 50 =
  8. 8.86 × 5 =
  9. 9.64 × 5 =
  10. 10.18 × 50 =
  11. 11.45 × 5 =
  12. 12.93 × 5 =
  13. 13.22 × 5 =
  14. 14.31 × 5 =
  15. 15.70 × 5 =
  16. 16.32 × 50 =
  17. 17.18 × 50 =
  18. 18.85 × 5 =
  19. 19.47 × 5 =
  20. 20.48 × 5 =
  21. 21.61 × 5 =
  22. 22.33 × 5 =
  23. 23.57 × 50 =
  24. 24.76 × 50 =
  25. 25.75 × 5 =
  26. 26.62 × 50 =
  27. 27.30 × 5 =
  28. 28.94 × 50 =
  29. 29.20 × 5 =
  30. 30.47 × 50 =
  31. 31.32 × 50 =
  32. 32.93 × 5 =
  33. 33.81 × 50 =
  34. 34.48 × 50 =
  35. 35.47 × 5 =
  36. 36.14 × 5 =
  37. 37.65 × 50 =
  38. 38.18 × 5 =
  39. 39.94 × 5 =
  40. 40.27 × 5 =

Answer key

  1. 2500
  2. 2700
  3. 3550
  4. 210
  5. 750
  6. 100
  7. 1050
  8. 430
  9. 320
  10. 900
  11. 225
  12. 465
  13. 110
  14. 155
  15. 350
  16. 1600
  17. 900
  18. 425
  19. 235
  20. 240
  21. 305
  22. 165
  23. 2850
  24. 3800
  25. 375
  26. 3100
  27. 150
  28. 4700
  29. 100
  30. 2350
  31. 1600
  32. 465
  33. 4050
  34. 2400
  35. 235
  36. 70
  37. 3250
  38. 90
  39. 470
  40. 135

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