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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 273 · 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. 2.56 × 5 =
  3. 3.19 × 50 =
  4. 4.61 × 5 =
  5. 5.89 × 5 =
  6. 6.49 × 5 =
  7. 7.58 × 50 =
  8. 8.39 × 50 =
  9. 9.91 × 5 =
  10. 10.38 × 5 =
  11. 11.28 × 50 =
  12. 12.54 × 5 =
  13. 13.96 × 50 =
  14. 14.22 × 50 =
  15. 15.38 × 5 =
  16. 16.86 × 50 =
  17. 17.63 × 5 =
  18. 18.31 × 50 =
  19. 19.84 × 50 =
  20. 20.55 × 50 =
  21. 21.91 × 5 =
  22. 22.20 × 5 =
  23. 23.71 × 5 =
  24. 24.82 × 5 =
  25. 25.59 × 50 =
  26. 26.69 × 5 =
  27. 27.19 × 5 =
  28. 28.51 × 50 =
  29. 29.69 × 5 =
  30. 30.34 × 50 =
  31. 31.43 × 5 =
  32. 32.59 × 5 =
  33. 33.51 × 5 =
  34. 34.84 × 5 =
  35. 35.25 × 50 =
  36. 36.36 × 5 =
  37. 37.24 × 50 =
  38. 38.44 × 5 =
  39. 39.88 × 50 =
  40. 40.38 × 5 =

Answer key

  1. 2500
  2. 280
  3. 950
  4. 305
  5. 445
  6. 245
  7. 2900
  8. 1950
  9. 455
  10. 190
  11. 1400
  12. 270
  13. 4800
  14. 1100
  15. 190
  16. 4300
  17. 315
  18. 1550
  19. 4200
  20. 2750
  21. 455
  22. 100
  23. 355
  24. 410
  25. 2950
  26. 345
  27. 95
  28. 2550
  29. 345
  30. 1700
  31. 215
  32. 295
  33. 255
  34. 420
  35. 1250
  36. 180
  37. 1200
  38. 220
  39. 4400
  40. 190

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