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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 422 · 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. 2.61 × 5 =
  3. 3.20 × 5 =
  4. 4.79 × 50 =
  5. 5.78 × 50 =
  6. 6.56 × 50 =
  7. 7.65 × 5 =
  8. 8.16 × 5 =
  9. 9.26 × 5 =
  10. 10.97 × 5 =
  11. 11.61 × 50 =
  12. 12.44 × 5 =
  13. 13.55 × 50 =
  14. 14.44 × 5 =
  15. 15.52 × 5 =
  16. 16.22 × 50 =
  17. 17.52 × 5 =
  18. 18.72 × 5 =
  19. 19.61 × 5 =
  20. 20.14 × 5 =
  21. 21.72 × 5 =
  22. 22.72 × 5 =
  23. 23.95 × 50 =
  24. 24.74 × 50 =
  25. 25.71 × 5 =
  26. 26.73 × 5 =
  27. 27.43 × 50 =
  28. 28.21 × 50 =
  29. 29.39 × 5 =
  30. 30.65 × 50 =
  31. 31.69 × 50 =
  32. 32.60 × 5 =
  33. 33.44 × 5 =
  34. 34.32 × 5 =
  35. 35.94 × 50 =
  36. 36.85 × 5 =
  37. 37.15 × 50 =
  38. 38.74 × 5 =
  39. 39.29 × 50 =
  40. 40.71 × 50 =

Answer key

  1. 2450
  2. 305
  3. 100
  4. 3950
  5. 3900
  6. 2800
  7. 325
  8. 80
  9. 130
  10. 485
  11. 3050
  12. 220
  13. 2750
  14. 220
  15. 260
  16. 1100
  17. 260
  18. 360
  19. 305
  20. 70
  21. 360
  22. 360
  23. 4750
  24. 3700
  25. 355
  26. 365
  27. 2150
  28. 1050
  29. 195
  30. 3250
  31. 3450
  32. 300
  33. 220
  34. 160
  35. 4700
  36. 425
  37. 750
  38. 370
  39. 1450
  40. 3550

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