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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 321 · 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. 1.27 × 5 =
  2. 2.18 × 50 =
  3. 3.95 × 50 =
  4. 4.23 × 50 =
  5. 5.94 × 5 =
  6. 6.47 × 5 =
  7. 7.77 × 50 =
  8. 8.65 × 50 =
  9. 9.28 × 50 =
  10. 10.44 × 50 =
  11. 11.23 × 5 =
  12. 12.65 × 5 =
  13. 13.25 × 50 =
  14. 14.39 × 5 =
  15. 15.39 × 50 =
  16. 16.17 × 5 =
  17. 17.23 × 50 =
  18. 18.35 × 5 =
  19. 19.20 × 5 =
  20. 20.24 × 50 =
  21. 21.19 × 5 =
  22. 22.97 × 5 =
  23. 23.23 × 5 =
  24. 24.26 × 50 =
  25. 25.82 × 5 =
  26. 26.26 × 50 =
  27. 27.25 × 50 =
  28. 28.28 × 50 =
  29. 29.83 × 5 =
  30. 30.56 × 50 =
  31. 31.25 × 50 =
  32. 32.64 × 5 =
  33. 33.28 × 5 =
  34. 34.71 × 5 =
  35. 35.87 × 5 =
  36. 36.61 × 5 =
  37. 37.71 × 50 =
  38. 38.84 × 50 =
  39. 39.92 × 5 =
  40. 40.94 × 5 =

Answer key

  1. 135
  2. 900
  3. 4750
  4. 1150
  5. 470
  6. 235
  7. 3850
  8. 3250
  9. 1400
  10. 2200
  11. 115
  12. 325
  13. 1250
  14. 195
  15. 1950
  16. 85
  17. 1150
  18. 175
  19. 100
  20. 1200
  21. 95
  22. 485
  23. 115
  24. 1300
  25. 410
  26. 1300
  27. 1250
  28. 1400
  29. 415
  30. 2800
  31. 1250
  32. 320
  33. 140
  34. 355
  35. 435
  36. 305
  37. 3550
  38. 4200
  39. 460
  40. 470

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