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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 206 · 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. 1.31 × 5 =
  2. 2.46 × 50 =
  3. 3.53 × 50 =
  4. 4.87 × 50 =
  5. 5.34 × 5 =
  6. 6.90 × 50 =
  7. 7.84 × 50 =
  8. 8.29 × 5 =
  9. 9.29 × 5 =
  10. 10.12 × 5 =
  11. 11.42 × 5 =
  12. 12.34 × 5 =
  13. 13.89 × 50 =
  14. 14.31 × 5 =
  15. 15.83 × 5 =
  16. 16.73 × 5 =
  17. 17.28 × 50 =
  18. 18.15 × 5 =
  19. 19.19 × 5 =
  20. 20.87 × 50 =
  21. 21.66 × 5 =
  22. 22.86 × 50 =
  23. 23.56 × 5 =
  24. 24.59 × 5 =
  25. 25.91 × 50 =
  26. 26.50 × 50 =
  27. 27.44 × 50 =
  28. 28.35 × 50 =
  29. 29.97 × 5 =
  30. 30.15 × 5 =
  31. 31.42 × 5 =
  32. 32.65 × 5 =
  33. 33.76 × 5 =
  34. 34.57 × 50 =
  35. 35.53 × 50 =
  36. 36.39 × 50 =
  37. 37.48 × 50 =
  38. 38.83 × 50 =
  39. 39.16 × 5 =
  40. 40.89 × 5 =

Answer key

  1. 155
  2. 2300
  3. 2650
  4. 4350
  5. 170
  6. 4500
  7. 4200
  8. 145
  9. 145
  10. 60
  11. 210
  12. 170
  13. 4450
  14. 155
  15. 415
  16. 365
  17. 1400
  18. 75
  19. 95
  20. 4350
  21. 330
  22. 4300
  23. 280
  24. 295
  25. 4550
  26. 2500
  27. 2200
  28. 1750
  29. 485
  30. 75
  31. 210
  32. 325
  33. 380
  34. 2850
  35. 2650
  36. 1950
  37. 2400
  38. 4150
  39. 80
  40. 445

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