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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 119 · 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. 1.70 × 50 =
  2. 2.94 × 5 =
  3. 3.70 × 5 =
  4. 4.12 × 5 =
  5. 5.16 × 50 =
  6. 6.26 × 50 =
  7. 7.42 × 50 =
  8. 8.79 × 5 =
  9. 9.28 × 50 =
  10. 10.57 × 50 =
  11. 11.15 × 50 =
  12. 12.13 × 50 =
  13. 13.30 × 50 =
  14. 14.22 × 5 =
  15. 15.27 × 50 =
  16. 16.48 × 50 =
  17. 17.27 × 5 =
  18. 18.44 × 50 =
  19. 19.44 × 50 =
  20. 20.95 × 5 =
  21. 21.65 × 5 =
  22. 22.94 × 5 =
  23. 23.76 × 50 =
  24. 24.30 × 5 =
  25. 25.54 × 5 =
  26. 26.88 × 5 =
  27. 27.31 × 50 =
  28. 28.64 × 5 =
  29. 29.50 × 5 =
  30. 30.93 × 5 =
  31. 31.71 × 50 =
  32. 32.14 × 50 =
  33. 33.55 × 50 =
  34. 34.94 × 50 =
  35. 35.77 × 50 =
  36. 36.31 × 5 =
  37. 37.36 × 5 =
  38. 38.96 × 5 =
  39. 39.39 × 5 =
  40. 40.60 × 50 =

Answer key

  1. 3500
  2. 470
  3. 350
  4. 60
  5. 800
  6. 1300
  7. 2100
  8. 395
  9. 1400
  10. 2850
  11. 750
  12. 650
  13. 1500
  14. 110
  15. 1350
  16. 2400
  17. 135
  18. 2200
  19. 2200
  20. 475
  21. 325
  22. 470
  23. 3800
  24. 150
  25. 270
  26. 440
  27. 1550
  28. 320
  29. 250
  30. 465
  31. 3550
  32. 700
  33. 2750
  34. 4700
  35. 3850
  36. 155
  37. 180
  38. 480
  39. 195
  40. 3000

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