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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 177 · 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. 1.49 × 50 =
  2. 2.12 × 50 =
  3. 3.21 × 50 =
  4. 4.66 × 5 =
  5. 5.44 × 50 =
  6. 6.85 × 5 =
  7. 7.20 × 5 =
  8. 8.91 × 5 =
  9. 9.65 × 50 =
  10. 10.81 × 5 =
  11. 11.15 × 5 =
  12. 12.66 × 5 =
  13. 13.49 × 50 =
  14. 14.14 × 50 =
  15. 15.42 × 5 =
  16. 16.93 × 50 =
  17. 17.44 × 50 =
  18. 18.15 × 50 =
  19. 19.52 × 5 =
  20. 20.31 × 5 =
  21. 21.16 × 5 =
  22. 22.56 × 5 =
  23. 23.70 × 5 =
  24. 24.88 × 5 =
  25. 25.32 × 5 =
  26. 26.67 × 5 =
  27. 27.15 × 5 =
  28. 28.67 × 5 =
  29. 29.15 × 50 =
  30. 30.20 × 50 =
  31. 31.24 × 50 =
  32. 32.91 × 5 =
  33. 33.17 × 5 =
  34. 34.45 × 50 =
  35. 35.84 × 50 =
  36. 36.67 × 50 =
  37. 37.26 × 5 =
  38. 38.57 × 5 =
  39. 39.14 × 50 =
  40. 40.92 × 5 =

Answer key

  1. 2450
  2. 600
  3. 1050
  4. 330
  5. 2200
  6. 425
  7. 100
  8. 455
  9. 3250
  10. 405
  11. 75
  12. 330
  13. 2450
  14. 700
  15. 210
  16. 4650
  17. 2200
  18. 750
  19. 260
  20. 155
  21. 80
  22. 280
  23. 350
  24. 440
  25. 160
  26. 335
  27. 75
  28. 335
  29. 750
  30. 1000
  31. 1200
  32. 455
  33. 85
  34. 2250
  35. 4200
  36. 3350
  37. 130
  38. 285
  39. 700
  40. 460

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