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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 788 · 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. 2.70 × 5 =
  3. 3.27 × 5 =
  4. 4.98 × 5 =
  5. 5.28 × 50 =
  6. 6.47 × 5 =
  7. 7.36 × 50 =
  8. 8.56 × 50 =
  9. 9.40 × 50 =
  10. 10.41 × 5 =
  11. 11.52 × 5 =
  12. 12.75 × 5 =
  13. 13.91 × 5 =
  14. 14.13 × 5 =
  15. 15.16 × 5 =
  16. 16.81 × 50 =
  17. 17.65 × 5 =
  18. 18.78 × 50 =
  19. 19.81 × 50 =
  20. 20.22 × 5 =
  21. 21.74 × 50 =
  22. 22.72 × 5 =
  23. 23.69 × 50 =
  24. 24.86 × 5 =
  25. 25.95 × 50 =
  26. 26.91 × 5 =
  27. 27.51 × 5 =
  28. 28.95 × 5 =
  29. 29.25 × 5 =
  30. 30.57 × 5 =
  31. 31.52 × 5 =
  32. 32.15 × 5 =
  33. 33.37 × 5 =
  34. 34.83 × 5 =
  35. 35.54 × 50 =
  36. 36.97 × 5 =
  37. 37.44 × 5 =
  38. 38.73 × 50 =
  39. 39.90 × 50 =
  40. 40.55 × 50 =

Answer key

  1. 2450
  2. 350
  3. 135
  4. 490
  5. 1400
  6. 235
  7. 1800
  8. 2800
  9. 2000
  10. 205
  11. 260
  12. 375
  13. 455
  14. 65
  15. 80
  16. 4050
  17. 325
  18. 3900
  19. 4050
  20. 110
  21. 3700
  22. 360
  23. 3450
  24. 430
  25. 4750
  26. 455
  27. 255
  28. 475
  29. 125
  30. 285
  31. 260
  32. 75
  33. 185
  34. 415
  35. 2700
  36. 485
  37. 220
  38. 3650
  39. 4500
  40. 2750

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