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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 332 · 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. 1.65 × 50 =
  2. 2.72 × 5 =
  3. 3.66 × 50 =
  4. 4.54 × 5 =
  5. 5.79 × 5 =
  6. 6.31 × 5 =
  7. 7.96 × 50 =
  8. 8.22 × 5 =
  9. 9.74 × 5 =
  10. 10.25 × 50 =
  11. 11.98 × 50 =
  12. 12.17 × 5 =
  13. 13.25 × 50 =
  14. 14.57 × 50 =
  15. 15.29 × 50 =
  16. 16.66 × 50 =
  17. 17.21 × 5 =
  18. 18.83 × 50 =
  19. 19.98 × 50 =
  20. 20.61 × 50 =
  21. 21.33 × 5 =
  22. 22.22 × 50 =
  23. 23.78 × 50 =
  24. 24.90 × 50 =
  25. 25.19 × 50 =
  26. 26.13 × 50 =
  27. 27.70 × 5 =
  28. 28.12 × 50 =
  29. 29.52 × 5 =
  30. 30.25 × 5 =
  31. 31.25 × 50 =
  32. 32.66 × 50 =
  33. 33.70 × 5 =
  34. 34.29 × 5 =
  35. 35.28 × 5 =
  36. 36.58 × 50 =
  37. 37.43 × 50 =
  38. 38.61 × 50 =
  39. 39.25 × 50 =
  40. 40.15 × 5 =

Answer key

  1. 3250
  2. 360
  3. 3300
  4. 270
  5. 395
  6. 155
  7. 4800
  8. 110
  9. 370
  10. 1250
  11. 4900
  12. 85
  13. 1250
  14. 2850
  15. 1450
  16. 3300
  17. 105
  18. 4150
  19. 4900
  20. 3050
  21. 165
  22. 1100
  23. 3900
  24. 4500
  25. 950
  26. 650
  27. 350
  28. 600
  29. 260
  30. 125
  31. 1250
  32. 3300
  33. 350
  34. 145
  35. 140
  36. 2900
  37. 2150
  38. 3050
  39. 1250
  40. 75

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