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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 127 · 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. 1.18 × 50 =
  2. 2.65 × 50 =
  3. 3.45 × 5 =
  4. 4.40 × 50 =
  5. 5.65 × 50 =
  6. 6.83 × 5 =
  7. 7.67 × 5 =
  8. 8.41 × 5 =
  9. 9.13 × 5 =
  10. 10.49 × 5 =
  11. 11.20 × 5 =
  12. 12.79 × 50 =
  13. 13.20 × 50 =
  14. 14.74 × 50 =
  15. 15.64 × 50 =
  16. 16.43 × 5 =
  17. 17.38 × 50 =
  18. 18.97 × 50 =
  19. 19.74 × 5 =
  20. 20.16 × 5 =
  21. 21.18 × 50 =
  22. 22.67 × 50 =
  23. 23.79 × 5 =
  24. 24.33 × 50 =
  25. 25.77 × 5 =
  26. 26.55 × 50 =
  27. 27.87 × 50 =
  28. 28.26 × 50 =
  29. 29.24 × 50 =
  30. 30.41 × 50 =
  31. 31.70 × 50 =
  32. 32.25 × 50 =
  33. 33.58 × 50 =
  34. 34.95 × 50 =
  35. 35.33 × 5 =
  36. 36.53 × 5 =
  37. 37.53 × 50 =
  38. 38.58 × 50 =
  39. 39.85 × 5 =
  40. 40.45 × 5 =

Answer key

  1. 900
  2. 3250
  3. 225
  4. 2000
  5. 3250
  6. 415
  7. 335
  8. 205
  9. 65
  10. 245
  11. 100
  12. 3950
  13. 1000
  14. 3700
  15. 3200
  16. 215
  17. 1900
  18. 4850
  19. 370
  20. 80
  21. 900
  22. 3350
  23. 395
  24. 1650
  25. 385
  26. 2750
  27. 4350
  28. 1300
  29. 1200
  30. 2050
  31. 3500
  32. 1250
  33. 2900
  34. 4750
  35. 165
  36. 265
  37. 2650
  38. 2900
  39. 425
  40. 225

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