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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 632 · 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. 1.21 × 50 =
  2. 2.24 × 5 =
  3. 3.96 × 5 =
  4. 4.17 × 50 =
  5. 5.93 × 5 =
  6. 6.33 × 50 =
  7. 7.69 × 5 =
  8. 8.48 × 50 =
  9. 9.43 × 5 =
  10. 10.95 × 5 =
  11. 11.15 × 5 =
  12. 12.83 × 50 =
  13. 13.34 × 50 =
  14. 14.84 × 50 =
  15. 15.44 × 50 =
  16. 16.72 × 5 =
  17. 17.79 × 5 =
  18. 18.31 × 5 =
  19. 19.26 × 5 =
  20. 20.86 × 50 =
  21. 21.84 × 50 =
  22. 22.45 × 5 =
  23. 23.29 × 50 =
  24. 24.77 × 50 =
  25. 25.34 × 50 =
  26. 26.97 × 50 =
  27. 27.48 × 50 =
  28. 28.83 × 50 =
  29. 29.71 × 5 =
  30. 30.53 × 5 =
  31. 31.19 × 50 =
  32. 32.39 × 50 =
  33. 33.51 × 50 =
  34. 34.49 × 5 =
  35. 35.41 × 50 =
  36. 36.30 × 50 =
  37. 37.94 × 50 =
  38. 38.13 × 50 =
  39. 39.68 × 50 =
  40. 40.84 × 5 =

Answer key

  1. 1050
  2. 120
  3. 480
  4. 850
  5. 465
  6. 1650
  7. 345
  8. 2400
  9. 215
  10. 475
  11. 75
  12. 4150
  13. 1700
  14. 4200
  15. 2200
  16. 360
  17. 395
  18. 155
  19. 130
  20. 4300
  21. 4200
  22. 225
  23. 1450
  24. 3850
  25. 1700
  26. 4850
  27. 2400
  28. 4150
  29. 355
  30. 265
  31. 950
  32. 1950
  33. 2550
  34. 245
  35. 2050
  36. 1500
  37. 4700
  38. 650
  39. 3400
  40. 420

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