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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 697 · 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. 1.46 × 50 =
  2. 2.26 × 5 =
  3. 3.45 × 5 =
  4. 4.29 × 5 =
  5. 5.32 × 5 =
  6. 6.31 × 5 =
  7. 7.71 × 50 =
  8. 8.79 × 50 =
  9. 9.53 × 50 =
  10. 10.33 × 50 =
  11. 11.58 × 5 =
  12. 12.47 × 50 =
  13. 13.94 × 50 =
  14. 14.89 × 50 =
  15. 15.42 × 50 =
  16. 16.16 × 5 =
  17. 17.82 × 5 =
  18. 18.37 × 5 =
  19. 19.13 × 50 =
  20. 20.47 × 5 =
  21. 21.70 × 5 =
  22. 22.46 × 5 =
  23. 23.80 × 50 =
  24. 24.15 × 5 =
  25. 25.55 × 5 =
  26. 26.79 × 5 =
  27. 27.43 × 50 =
  28. 28.88 × 5 =
  29. 29.56 × 50 =
  30. 30.30 × 50 =
  31. 31.58 × 5 =
  32. 32.98 × 5 =
  33. 33.50 × 50 =
  34. 34.41 × 50 =
  35. 35.73 × 5 =
  36. 36.17 × 50 =
  37. 37.20 × 50 =
  38. 38.92 × 5 =
  39. 39.95 × 50 =
  40. 40.74 × 5 =

Answer key

  1. 2300
  2. 130
  3. 225
  4. 145
  5. 160
  6. 155
  7. 3550
  8. 3950
  9. 2650
  10. 1650
  11. 290
  12. 2350
  13. 4700
  14. 4450
  15. 2100
  16. 80
  17. 410
  18. 185
  19. 650
  20. 235
  21. 350
  22. 230
  23. 4000
  24. 75
  25. 275
  26. 395
  27. 2150
  28. 440
  29. 2800
  30. 1500
  31. 290
  32. 490
  33. 2500
  34. 2050
  35. 365
  36. 850
  37. 1000
  38. 460
  39. 4750
  40. 370

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