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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 258 · 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. 1.73 × 5 =
  2. 2.90 × 50 =
  3. 3.33 × 50 =
  4. 4.84 × 50 =
  5. 5.64 × 5 =
  6. 6.76 × 50 =
  7. 7.49 × 5 =
  8. 8.57 × 5 =
  9. 9.43 × 50 =
  10. 10.76 × 50 =
  11. 11.91 × 5 =
  12. 12.31 × 50 =
  13. 13.37 × 50 =
  14. 14.61 × 5 =
  15. 15.44 × 5 =
  16. 16.71 × 50 =
  17. 17.40 × 5 =
  18. 18.38 × 5 =
  19. 19.70 × 5 =
  20. 20.81 × 50 =
  21. 21.34 × 5 =
  22. 22.68 × 50 =
  23. 23.74 × 5 =
  24. 24.19 × 50 =
  25. 25.71 × 5 =
  26. 26.54 × 5 =
  27. 27.94 × 50 =
  28. 28.21 × 5 =
  29. 29.88 × 5 =
  30. 30.96 × 50 =
  31. 31.76 × 50 =
  32. 32.31 × 50 =
  33. 33.16 × 50 =
  34. 34.33 × 5 =
  35. 35.24 × 50 =
  36. 36.96 × 5 =
  37. 37.93 × 50 =
  38. 38.41 × 50 =
  39. 39.12 × 5 =
  40. 40.61 × 5 =

Answer key

  1. 365
  2. 4500
  3. 1650
  4. 4200
  5. 320
  6. 3800
  7. 245
  8. 285
  9. 2150
  10. 3800
  11. 455
  12. 1550
  13. 1850
  14. 305
  15. 220
  16. 3550
  17. 200
  18. 190
  19. 350
  20. 4050
  21. 170
  22. 3400
  23. 370
  24. 950
  25. 355
  26. 270
  27. 4700
  28. 105
  29. 440
  30. 4800
  31. 3800
  32. 1550
  33. 800
  34. 165
  35. 1200
  36. 480
  37. 4650
  38. 2050
  39. 60
  40. 305

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