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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 240 · 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. 1.36 × 50 =
  2. 2.84 × 50 =
  3. 3.21 × 50 =
  4. 4.45 × 5 =
  5. 5.31 × 5 =
  6. 6.33 × 5 =
  7. 7.47 × 5 =
  8. 8.28 × 50 =
  9. 9.79 × 50 =
  10. 10.42 × 5 =
  11. 11.54 × 5 =
  12. 12.40 × 50 =
  13. 13.47 × 50 =
  14. 14.46 × 50 =
  15. 15.33 × 5 =
  16. 16.55 × 50 =
  17. 17.23 × 5 =
  18. 18.51 × 50 =
  19. 19.12 × 5 =
  20. 20.90 × 5 =
  21. 21.35 × 50 =
  22. 22.82 × 5 =
  23. 23.14 × 5 =
  24. 24.46 × 5 =
  25. 25.84 × 50 =
  26. 26.31 × 50 =
  27. 27.45 × 5 =
  28. 28.70 × 5 =
  29. 29.94 × 50 =
  30. 30.27 × 50 =
  31. 31.15 × 50 =
  32. 32.62 × 5 =
  33. 33.15 × 50 =
  34. 34.29 × 5 =
  35. 35.91 × 50 =
  36. 36.84 × 50 =
  37. 37.31 × 5 =
  38. 38.95 × 50 =
  39. 39.29 × 5 =
  40. 40.65 × 5 =

Answer key

  1. 1800
  2. 4200
  3. 1050
  4. 225
  5. 155
  6. 165
  7. 235
  8. 1400
  9. 3950
  10. 210
  11. 270
  12. 2000
  13. 2350
  14. 2300
  15. 165
  16. 2750
  17. 115
  18. 2550
  19. 60
  20. 450
  21. 1750
  22. 410
  23. 70
  24. 230
  25. 4200
  26. 1550
  27. 225
  28. 350
  29. 4700
  30. 1350
  31. 750
  32. 310
  33. 750
  34. 145
  35. 4550
  36. 4200
  37. 155
  38. 4750
  39. 145
  40. 325

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