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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 160 · 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. 1.39 × 50 =
  2. 2.57 × 50 =
  3. 3.80 × 50 =
  4. 4.56 × 5 =
  5. 5.67 × 5 =
  6. 6.46 × 5 =
  7. 7.18 × 50 =
  8. 8.17 × 50 =
  9. 9.55 × 50 =
  10. 10.52 × 5 =
  11. 11.84 × 5 =
  12. 12.29 × 5 =
  13. 13.58 × 50 =
  14. 14.40 × 50 =
  15. 15.40 × 5 =
  16. 16.74 × 50 =
  17. 17.35 × 5 =
  18. 18.31 × 5 =
  19. 19.24 × 5 =
  20. 20.23 × 50 =
  21. 21.29 × 5 =
  22. 22.18 × 5 =
  23. 23.35 × 50 =
  24. 24.82 × 50 =
  25. 25.22 × 5 =
  26. 26.80 × 50 =
  27. 27.24 × 50 =
  28. 28.65 × 50 =
  29. 29.16 × 50 =
  30. 30.59 × 5 =
  31. 31.39 × 50 =
  32. 32.79 × 5 =
  33. 33.38 × 50 =
  34. 34.24 × 5 =
  35. 35.93 × 50 =
  36. 36.97 × 50 =
  37. 37.95 × 50 =
  38. 38.25 × 50 =
  39. 39.84 × 50 =
  40. 40.52 × 5 =

Answer key

  1. 1950
  2. 2850
  3. 4000
  4. 280
  5. 335
  6. 230
  7. 900
  8. 850
  9. 2750
  10. 260
  11. 420
  12. 145
  13. 2900
  14. 2000
  15. 200
  16. 3700
  17. 175
  18. 155
  19. 120
  20. 1150
  21. 145
  22. 90
  23. 1750
  24. 4100
  25. 110
  26. 4000
  27. 1200
  28. 3250
  29. 800
  30. 295
  31. 1950
  32. 395
  33. 1900
  34. 120
  35. 4650
  36. 4850
  37. 4750
  38. 1250
  39. 4200
  40. 260

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