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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 388 · 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. 1.26 × 50 =
  2. 2.90 × 50 =
  3. 3.56 × 50 =
  4. 4.82 × 50 =
  5. 5.85 × 5 =
  6. 6.92 × 5 =
  7. 7.98 × 50 =
  8. 8.51 × 50 =
  9. 9.35 × 5 =
  10. 10.31 × 50 =
  11. 11.80 × 5 =
  12. 12.96 × 50 =
  13. 13.23 × 50 =
  14. 14.63 × 5 =
  15. 15.70 × 50 =
  16. 16.44 × 50 =
  17. 17.78 × 50 =
  18. 18.94 × 50 =
  19. 19.74 × 5 =
  20. 20.34 × 50 =
  21. 21.66 × 50 =
  22. 22.89 × 5 =
  23. 23.81 × 5 =
  24. 24.49 × 5 =
  25. 25.79 × 50 =
  26. 26.66 × 5 =
  27. 27.68 × 5 =
  28. 28.57 × 5 =
  29. 29.12 × 50 =
  30. 30.35 × 5 =
  31. 31.13 × 5 =
  32. 32.47 × 50 =
  33. 33.17 × 5 =
  34. 34.23 × 50 =
  35. 35.41 × 5 =
  36. 36.17 × 50 =
  37. 37.95 × 50 =
  38. 38.50 × 5 =
  39. 39.79 × 5 =
  40. 40.66 × 5 =

Answer key

  1. 1300
  2. 4500
  3. 2800
  4. 4100
  5. 425
  6. 460
  7. 4900
  8. 2550
  9. 175
  10. 1550
  11. 400
  12. 4800
  13. 1150
  14. 315
  15. 3500
  16. 2200
  17. 3900
  18. 4700
  19. 370
  20. 1700
  21. 3300
  22. 445
  23. 405
  24. 245
  25. 3950
  26. 330
  27. 340
  28. 285
  29. 600
  30. 175
  31. 65
  32. 2350
  33. 85
  34. 1150
  35. 205
  36. 850
  37. 4750
  38. 250
  39. 395
  40. 330

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