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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 779 · 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. 1.27 × 5 =
  2. 2.25 × 5 =
  3. 3.28 × 50 =
  4. 4.39 × 5 =
  5. 5.56 × 5 =
  6. 6.84 × 50 =
  7. 7.17 × 5 =
  8. 8.30 × 5 =
  9. 9.16 × 5 =
  10. 10.85 × 5 =
  11. 11.30 × 50 =
  12. 12.48 × 5 =
  13. 13.37 × 5 =
  14. 14.92 × 5 =
  15. 15.82 × 50 =
  16. 16.70 × 50 =
  17. 17.53 × 5 =
  18. 18.15 × 5 =
  19. 19.82 × 50 =
  20. 20.48 × 5 =
  21. 21.14 × 5 =
  22. 22.33 × 50 =
  23. 23.64 × 5 =
  24. 24.57 × 5 =
  25. 25.67 × 50 =
  26. 26.19 × 50 =
  27. 27.19 × 5 =
  28. 28.25 × 5 =
  29. 29.95 × 50 =
  30. 30.49 × 5 =
  31. 31.74 × 5 =
  32. 32.92 × 5 =
  33. 33.75 × 50 =
  34. 34.51 × 5 =
  35. 35.52 × 50 =
  36. 36.71 × 5 =
  37. 37.61 × 50 =
  38. 38.29 × 50 =
  39. 39.19 × 50 =
  40. 40.12 × 5 =

Answer key

  1. 135
  2. 125
  3. 1400
  4. 195
  5. 280
  6. 4200
  7. 85
  8. 150
  9. 80
  10. 425
  11. 1500
  12. 240
  13. 185
  14. 460
  15. 4100
  16. 3500
  17. 265
  18. 75
  19. 4100
  20. 240
  21. 70
  22. 1650
  23. 320
  24. 285
  25. 3350
  26. 950
  27. 95
  28. 125
  29. 4750
  30. 245
  31. 370
  32. 460
  33. 3750
  34. 255
  35. 2600
  36. 355
  37. 3050
  38. 1450
  39. 950
  40. 60

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