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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 654 · 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. 1.50 × 50 =
  2. 2.70 × 5 =
  3. 3.71 × 5 =
  4. 4.97 × 50 =
  5. 5.59 × 5 =
  6. 6.27 × 50 =
  7. 7.36 × 5 =
  8. 8.71 × 5 =
  9. 9.89 × 50 =
  10. 10.39 × 50 =
  11. 11.67 × 5 =
  12. 12.68 × 5 =
  13. 13.56 × 50 =
  14. 14.74 × 5 =
  15. 15.29 × 50 =
  16. 16.84 × 5 =
  17. 17.54 × 50 =
  18. 18.66 × 5 =
  19. 19.18 × 5 =
  20. 20.92 × 5 =
  21. 21.70 × 50 =
  22. 22.15 × 50 =
  23. 23.25 × 5 =
  24. 24.22 × 50 =
  25. 25.40 × 5 =
  26. 26.84 × 50 =
  27. 27.23 × 50 =
  28. 28.92 × 5 =
  29. 29.56 × 5 =
  30. 30.21 × 50 =
  31. 31.72 × 5 =
  32. 32.53 × 5 =
  33. 33.80 × 5 =
  34. 34.78 × 5 =
  35. 35.39 × 50 =
  36. 36.73 × 50 =
  37. 37.12 × 50 =
  38. 38.32 × 50 =
  39. 39.22 × 50 =
  40. 40.52 × 50 =

Answer key

  1. 2500
  2. 350
  3. 355
  4. 4850
  5. 295
  6. 1350
  7. 180
  8. 355
  9. 4450
  10. 1950
  11. 335
  12. 340
  13. 2800
  14. 370
  15. 1450
  16. 420
  17. 2700
  18. 330
  19. 90
  20. 460
  21. 3500
  22. 750
  23. 125
  24. 1100
  25. 200
  26. 4200
  27. 1150
  28. 460
  29. 280
  30. 1050
  31. 360
  32. 265
  33. 400
  34. 390
  35. 1950
  36. 3650
  37. 600
  38. 1600
  39. 1100
  40. 2600

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