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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 806 · 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. 1.45 × 50 =
  2. 2.98 × 5 =
  3. 3.14 × 5 =
  4. 4.30 × 5 =
  5. 5.15 × 5 =
  6. 6.84 × 50 =
  7. 7.62 × 50 =
  8. 8.97 × 50 =
  9. 9.49 × 5 =
  10. 10.84 × 5 =
  11. 11.57 × 50 =
  12. 12.35 × 5 =
  13. 13.50 × 50 =
  14. 14.82 × 50 =
  15. 15.19 × 5 =
  16. 16.49 × 50 =
  17. 17.37 × 50 =
  18. 18.50 × 50 =
  19. 19.97 × 5 =
  20. 20.16 × 50 =
  21. 21.87 × 5 =
  22. 22.95 × 50 =
  23. 23.61 × 50 =
  24. 24.97 × 5 =
  25. 25.47 × 5 =
  26. 26.71 × 50 =
  27. 27.65 × 5 =
  28. 28.44 × 5 =
  29. 29.16 × 5 =
  30. 30.82 × 50 =
  31. 31.64 × 50 =
  32. 32.88 × 5 =
  33. 33.26 × 5 =
  34. 34.16 × 50 =
  35. 35.89 × 5 =
  36. 36.37 × 5 =
  37. 37.29 × 50 =
  38. 38.57 × 50 =
  39. 39.80 × 5 =
  40. 40.33 × 50 =

Answer key

  1. 2250
  2. 490
  3. 70
  4. 150
  5. 75
  6. 4200
  7. 3100
  8. 4850
  9. 245
  10. 420
  11. 2850
  12. 175
  13. 2500
  14. 4100
  15. 95
  16. 2450
  17. 1850
  18. 2500
  19. 485
  20. 800
  21. 435
  22. 4750
  23. 3050
  24. 485
  25. 235
  26. 3550
  27. 325
  28. 220
  29. 80
  30. 4100
  31. 3200
  32. 440
  33. 130
  34. 800
  35. 445
  36. 185
  37. 1450
  38. 2850
  39. 400
  40. 1650

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