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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 448 · 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. 2.77 × 50 =
  3. 3.54 × 5 =
  4. 4.12 × 5 =
  5. 5.43 × 5 =
  6. 6.20 × 5 =
  7. 7.23 × 50 =
  8. 8.98 × 50 =
  9. 9.61 × 50 =
  10. 10.56 × 50 =
  11. 11.53 × 5 =
  12. 12.28 × 50 =
  13. 13.65 × 5 =
  14. 14.39 × 5 =
  15. 15.59 × 5 =
  16. 16.63 × 50 =
  17. 17.56 × 5 =
  18. 18.42 × 5 =
  19. 19.22 × 5 =
  20. 20.83 × 5 =
  21. 21.63 × 5 =
  22. 22.51 × 5 =
  23. 23.92 × 5 =
  24. 24.88 × 50 =
  25. 25.80 × 50 =
  26. 26.91 × 5 =
  27. 27.79 × 5 =
  28. 28.12 × 5 =
  29. 29.13 × 5 =
  30. 30.35 × 5 =
  31. 31.80 × 5 =
  32. 32.71 × 50 =
  33. 33.50 × 50 =
  34. 34.89 × 50 =
  35. 35.68 × 50 =
  36. 36.20 × 50 =
  37. 37.32 × 50 =
  38. 38.41 × 5 =
  39. 39.89 × 50 =
  40. 40.17 × 50 =

Answer key

  1. 900
  2. 3850
  3. 270
  4. 60
  5. 215
  6. 100
  7. 1150
  8. 4900
  9. 3050
  10. 2800
  11. 265
  12. 1400
  13. 325
  14. 195
  15. 295
  16. 3150
  17. 280
  18. 210
  19. 110
  20. 415
  21. 315
  22. 255
  23. 460
  24. 4400
  25. 4000
  26. 455
  27. 395
  28. 60
  29. 65
  30. 175
  31. 400
  32. 3550
  33. 2500
  34. 4450
  35. 3400
  36. 1000
  37. 1600
  38. 205
  39. 4450
  40. 850

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