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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 551 · 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. 1.13 × 5 =
  2. 2.80 × 50 =
  3. 3.18 × 50 =
  4. 4.12 × 5 =
  5. 5.87 × 50 =
  6. 6.97 × 50 =
  7. 7.80 × 5 =
  8. 8.91 × 5 =
  9. 9.42 × 5 =
  10. 10.90 × 50 =
  11. 11.20 × 50 =
  12. 12.25 × 5 =
  13. 13.19 × 50 =
  14. 14.29 × 5 =
  15. 15.95 × 50 =
  16. 16.76 × 50 =
  17. 17.28 × 50 =
  18. 18.58 × 5 =
  19. 19.97 × 50 =
  20. 20.35 × 5 =
  21. 21.71 × 5 =
  22. 22.88 × 5 =
  23. 23.74 × 5 =
  24. 24.70 × 50 =
  25. 25.96 × 50 =
  26. 26.17 × 50 =
  27. 27.55 × 50 =
  28. 28.45 × 5 =
  29. 29.59 × 5 =
  30. 30.70 × 5 =
  31. 31.37 × 5 =
  32. 32.52 × 50 =
  33. 33.28 × 5 =
  34. 34.54 × 5 =
  35. 35.69 × 5 =
  36. 36.42 × 5 =
  37. 37.39 × 50 =
  38. 38.24 × 5 =
  39. 39.14 × 5 =
  40. 40.14 × 50 =

Answer key

  1. 65
  2. 4000
  3. 900
  4. 60
  5. 4350
  6. 4850
  7. 400
  8. 455
  9. 210
  10. 4500
  11. 1000
  12. 125
  13. 950
  14. 145
  15. 4750
  16. 3800
  17. 1400
  18. 290
  19. 4850
  20. 175
  21. 355
  22. 440
  23. 370
  24. 3500
  25. 4800
  26. 850
  27. 2750
  28. 225
  29. 295
  30. 350
  31. 185
  32. 2600
  33. 140
  34. 270
  35. 345
  36. 210
  37. 1950
  38. 120
  39. 70
  40. 700

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