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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 58 · 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. 2.31 × 5 =
  3. 3.56 × 50 =
  4. 4.33 × 5 =
  5. 5.79 × 5 =
  6. 6.35 × 5 =
  7. 7.16 × 5 =
  8. 8.27 × 5 =
  9. 9.67 × 50 =
  10. 10.21 × 50 =
  11. 11.44 × 5 =
  12. 12.42 × 50 =
  13. 13.39 × 5 =
  14. 14.79 × 5 =
  15. 15.24 × 5 =
  16. 16.78 × 50 =
  17. 17.45 × 5 =
  18. 18.19 × 5 =
  19. 19.36 × 50 =
  20. 20.37 × 50 =
  21. 21.57 × 50 =
  22. 22.40 × 5 =
  23. 23.47 × 50 =
  24. 24.97 × 5 =
  25. 25.12 × 50 =
  26. 26.64 × 5 =
  27. 27.65 × 50 =
  28. 28.66 × 5 =
  29. 29.86 × 50 =
  30. 30.12 × 5 =
  31. 31.19 × 50 =
  32. 32.82 × 50 =
  33. 33.86 × 5 =
  34. 34.24 × 5 =
  35. 35.23 × 50 =
  36. 36.71 × 5 =
  37. 37.22 × 5 =
  38. 38.33 × 5 =
  39. 39.73 × 50 =
  40. 40.96 × 50 =

Answer key

  1. 2450
  2. 155
  3. 2800
  4. 165
  5. 395
  6. 175
  7. 80
  8. 135
  9. 3350
  10. 1050
  11. 220
  12. 2100
  13. 195
  14. 395
  15. 120
  16. 3900
  17. 225
  18. 95
  19. 1800
  20. 1850
  21. 2850
  22. 200
  23. 2350
  24. 485
  25. 600
  26. 320
  27. 3250
  28. 330
  29. 4300
  30. 60
  31. 950
  32. 4100
  33. 430
  34. 120
  35. 1150
  36. 355
  37. 110
  38. 165
  39. 3650
  40. 4800

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