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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 559 · 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. 1.20 × 5 =
  2. 2.63 × 5 =
  3. 3.27 × 5 =
  4. 4.46 × 5 =
  5. 5.16 × 5 =
  6. 6.84 × 50 =
  7. 7.96 × 50 =
  8. 8.76 × 5 =
  9. 9.36 × 50 =
  10. 10.28 × 50 =
  11. 11.30 × 5 =
  12. 12.34 × 5 =
  13. 13.26 × 50 =
  14. 14.79 × 5 =
  15. 15.36 × 50 =
  16. 16.59 × 50 =
  17. 17.95 × 50 =
  18. 18.21 × 50 =
  19. 19.43 × 50 =
  20. 20.12 × 50 =
  21. 21.94 × 50 =
  22. 22.28 × 50 =
  23. 23.57 × 5 =
  24. 24.84 × 5 =
  25. 25.89 × 5 =
  26. 26.70 × 50 =
  27. 27.19 × 50 =
  28. 28.87 × 5 =
  29. 29.58 × 50 =
  30. 30.19 × 50 =
  31. 31.97 × 50 =
  32. 32.36 × 50 =
  33. 33.63 × 5 =
  34. 34.20 × 5 =
  35. 35.54 × 50 =
  36. 36.37 × 5 =
  37. 37.74 × 5 =
  38. 38.15 × 5 =
  39. 39.72 × 5 =
  40. 40.64 × 50 =

Answer key

  1. 100
  2. 315
  3. 135
  4. 230
  5. 80
  6. 4200
  7. 4800
  8. 380
  9. 1800
  10. 1400
  11. 150
  12. 170
  13. 1300
  14. 395
  15. 1800
  16. 2950
  17. 4750
  18. 1050
  19. 2150
  20. 600
  21. 4700
  22. 1400
  23. 285
  24. 420
  25. 445
  26. 3500
  27. 950
  28. 435
  29. 2900
  30. 950
  31. 4850
  32. 1800
  33. 315
  34. 100
  35. 2700
  36. 185
  37. 370
  38. 75
  39. 360
  40. 3200

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