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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 194 · 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. 1.94 × 5 =
  2. 2.80 × 50 =
  3. 3.80 × 5 =
  4. 4.26 × 5 =
  5. 5.39 × 50 =
  6. 6.34 × 5 =
  7. 7.78 × 5 =
  8. 8.25 × 5 =
  9. 9.84 × 5 =
  10. 10.19 × 5 =
  11. 11.60 × 5 =
  12. 12.16 × 50 =
  13. 13.72 × 50 =
  14. 14.89 × 50 =
  15. 15.24 × 50 =
  16. 16.70 × 5 =
  17. 17.27 × 5 =
  18. 18.57 × 50 =
  19. 19.47 × 50 =
  20. 20.46 × 5 =
  21. 21.52 × 5 =
  22. 22.18 × 5 =
  23. 23.57 × 50 =
  24. 24.66 × 50 =
  25. 25.86 × 5 =
  26. 26.82 × 50 =
  27. 27.71 × 5 =
  28. 28.91 × 5 =
  29. 29.81 × 50 =
  30. 30.51 × 50 =
  31. 31.15 × 50 =
  32. 32.84 × 5 =
  33. 33.67 × 50 =
  34. 34.78 × 50 =
  35. 35.54 × 5 =
  36. 36.47 × 50 =
  37. 37.45 × 5 =
  38. 38.13 × 5 =
  39. 39.33 × 5 =
  40. 40.21 × 5 =

Answer key

  1. 470
  2. 4000
  3. 400
  4. 130
  5. 1950
  6. 170
  7. 390
  8. 125
  9. 420
  10. 95
  11. 300
  12. 800
  13. 3600
  14. 4450
  15. 1200
  16. 350
  17. 135
  18. 2850
  19. 2350
  20. 230
  21. 260
  22. 90
  23. 2850
  24. 3300
  25. 430
  26. 4100
  27. 355
  28. 455
  29. 4050
  30. 2550
  31. 750
  32. 420
  33. 3350
  34. 3900
  35. 270
  36. 2350
  37. 225
  38. 65
  39. 165
  40. 105

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