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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 330 · 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. 1.26 × 5 =
  2. 2.85 × 5 =
  3. 3.17 × 5 =
  4. 4.45 × 50 =
  5. 5.75 × 5 =
  6. 6.34 × 5 =
  7. 7.26 × 5 =
  8. 8.92 × 5 =
  9. 9.59 × 5 =
  10. 10.29 × 5 =
  11. 11.95 × 50 =
  12. 12.67 × 50 =
  13. 13.69 × 50 =
  14. 14.96 × 5 =
  15. 15.70 × 50 =
  16. 16.45 × 50 =
  17. 17.93 × 5 =
  18. 18.93 × 50 =
  19. 19.75 × 50 =
  20. 20.24 × 5 =
  21. 21.23 × 50 =
  22. 22.84 × 50 =
  23. 23.87 × 5 =
  24. 24.20 × 5 =
  25. 25.62 × 50 =
  26. 26.16 × 50 =
  27. 27.51 × 50 =
  28. 28.15 × 50 =
  29. 29.71 × 50 =
  30. 30.56 × 50 =
  31. 31.81 × 5 =
  32. 32.94 × 50 =
  33. 33.87 × 5 =
  34. 34.56 × 5 =
  35. 35.26 × 50 =
  36. 36.20 × 50 =
  37. 37.24 × 5 =
  38. 38.70 × 5 =
  39. 39.92 × 5 =
  40. 40.63 × 5 =

Answer key

  1. 130
  2. 425
  3. 85
  4. 2250
  5. 375
  6. 170
  7. 130
  8. 460
  9. 295
  10. 145
  11. 4750
  12. 3350
  13. 3450
  14. 480
  15. 3500
  16. 2250
  17. 465
  18. 4650
  19. 3750
  20. 120
  21. 1150
  22. 4200
  23. 435
  24. 100
  25. 3100
  26. 800
  27. 2550
  28. 750
  29. 3550
  30. 2800
  31. 405
  32. 4700
  33. 435
  34. 280
  35. 1300
  36. 1000
  37. 120
  38. 350
  39. 460
  40. 315

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