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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 182 · 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. 1.38 × 50 =
  2. 2.12 × 5 =
  3. 3.67 × 50 =
  4. 4.85 × 5 =
  5. 5.57 × 5 =
  6. 6.79 × 5 =
  7. 7.68 × 5 =
  8. 8.68 × 50 =
  9. 9.22 × 5 =
  10. 10.42 × 5 =
  11. 11.71 × 50 =
  12. 12.50 × 50 =
  13. 13.54 × 50 =
  14. 14.55 × 50 =
  15. 15.34 × 50 =
  16. 16.89 × 50 =
  17. 17.91 × 5 =
  18. 18.61 × 5 =
  19. 19.47 × 5 =
  20. 20.33 × 50 =
  21. 21.49 × 5 =
  22. 22.50 × 5 =
  23. 23.82 × 5 =
  24. 24.13 × 50 =
  25. 25.90 × 5 =
  26. 26.13 × 50 =
  27. 27.51 × 50 =
  28. 28.52 × 5 =
  29. 29.71 × 5 =
  30. 30.63 × 5 =
  31. 31.91 × 50 =
  32. 32.86 × 50 =
  33. 33.79 × 5 =
  34. 34.84 × 50 =
  35. 35.41 × 5 =
  36. 36.21 × 5 =
  37. 37.54 × 5 =
  38. 38.27 × 5 =
  39. 39.77 × 50 =
  40. 40.88 × 5 =

Answer key

  1. 1900
  2. 60
  3. 3350
  4. 425
  5. 285
  6. 395
  7. 340
  8. 3400
  9. 110
  10. 210
  11. 3550
  12. 2500
  13. 2700
  14. 2750
  15. 1700
  16. 4450
  17. 455
  18. 305
  19. 235
  20. 1650
  21. 245
  22. 250
  23. 410
  24. 650
  25. 450
  26. 650
  27. 2550
  28. 260
  29. 355
  30. 315
  31. 4550
  32. 4300
  33. 395
  34. 4200
  35. 205
  36. 105
  37. 270
  38. 135
  39. 3850
  40. 440

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