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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 590 · 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. 1.60 × 5 =
  2. 2.60 × 50 =
  3. 3.18 × 50 =
  4. 4.96 × 50 =
  5. 5.18 × 50 =
  6. 6.58 × 5 =
  7. 7.88 × 50 =
  8. 8.44 × 5 =
  9. 9.26 × 50 =
  10. 10.63 × 5 =
  11. 11.45 × 5 =
  12. 12.71 × 5 =
  13. 13.93 × 5 =
  14. 14.36 × 50 =
  15. 15.66 × 5 =
  16. 16.85 × 50 =
  17. 17.79 × 5 =
  18. 18.55 × 5 =
  19. 19.69 × 5 =
  20. 20.15 × 50 =
  21. 21.21 × 5 =
  22. 22.55 × 5 =
  23. 23.62 × 50 =
  24. 24.71 × 50 =
  25. 25.31 × 5 =
  26. 26.25 × 5 =
  27. 27.17 × 50 =
  28. 28.23 × 5 =
  29. 29.15 × 5 =
  30. 30.57 × 5 =
  31. 31.29 × 5 =
  32. 32.72 × 50 =
  33. 33.80 × 50 =
  34. 34.27 × 5 =
  35. 35.32 × 50 =
  36. 36.95 × 5 =
  37. 37.44 × 50 =
  38. 38.61 × 5 =
  39. 39.92 × 5 =
  40. 40.13 × 5 =

Answer key

  1. 300
  2. 3000
  3. 900
  4. 4800
  5. 900
  6. 290
  7. 4400
  8. 220
  9. 1300
  10. 315
  11. 225
  12. 355
  13. 465
  14. 1800
  15. 330
  16. 4250
  17. 395
  18. 275
  19. 345
  20. 750
  21. 105
  22. 275
  23. 3100
  24. 3550
  25. 155
  26. 125
  27. 850
  28. 115
  29. 75
  30. 285
  31. 145
  32. 3600
  33. 4000
  34. 135
  35. 1600
  36. 475
  37. 2200
  38. 305
  39. 460
  40. 65

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