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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 14 · 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. 1.30 × 5 =
  2. 2.22 × 50 =
  3. 3.77 × 5 =
  4. 4.37 × 50 =
  5. 5.51 × 5 =
  6. 6.35 × 5 =
  7. 7.57 × 50 =
  8. 8.15 × 5 =
  9. 9.66 × 5 =
  10. 10.79 × 50 =
  11. 11.23 × 50 =
  12. 12.70 × 50 =
  13. 13.27 × 50 =
  14. 14.54 × 50 =
  15. 15.92 × 5 =
  16. 16.44 × 5 =
  17. 17.22 × 50 =
  18. 18.68 × 50 =
  19. 19.13 × 5 =
  20. 20.53 × 50 =
  21. 21.63 × 5 =
  22. 22.14 × 50 =
  23. 23.56 × 5 =
  24. 24.41 × 5 =
  25. 25.13 × 5 =
  26. 26.96 × 5 =
  27. 27.15 × 50 =
  28. 28.91 × 5 =
  29. 29.50 × 50 =
  30. 30.28 × 50 =
  31. 31.45 × 50 =
  32. 32.12 × 5 =
  33. 33.14 × 5 =
  34. 34.71 × 50 =
  35. 35.43 × 5 =
  36. 36.57 × 5 =
  37. 37.38 × 50 =
  38. 38.67 × 5 =
  39. 39.43 × 50 =
  40. 40.17 × 50 =

Answer key

  1. 150
  2. 1100
  3. 385
  4. 1850
  5. 255
  6. 175
  7. 2850
  8. 75
  9. 330
  10. 3950
  11. 1150
  12. 3500
  13. 1350
  14. 2700
  15. 460
  16. 220
  17. 1100
  18. 3400
  19. 65
  20. 2650
  21. 315
  22. 700
  23. 280
  24. 205
  25. 65
  26. 480
  27. 750
  28. 455
  29. 2500
  30. 1400
  31. 2250
  32. 60
  33. 70
  34. 3550
  35. 215
  36. 285
  37. 1900
  38. 335
  39. 2150
  40. 850

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