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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 327 · 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. 1.72 × 50 =
  2. 2.22 × 5 =
  3. 3.96 × 5 =
  4. 4.62 × 50 =
  5. 5.91 × 50 =
  6. 6.19 × 50 =
  7. 7.57 × 5 =
  8. 8.21 × 5 =
  9. 9.24 × 50 =
  10. 10.82 × 50 =
  11. 11.33 × 50 =
  12. 12.40 × 5 =
  13. 13.59 × 50 =
  14. 14.63 × 50 =
  15. 15.19 × 5 =
  16. 16.91 × 50 =
  17. 17.74 × 50 =
  18. 18.87 × 5 =
  19. 19.93 × 5 =
  20. 20.94 × 50 =
  21. 21.45 × 5 =
  22. 22.15 × 50 =
  23. 23.67 × 5 =
  24. 24.57 × 50 =
  25. 25.93 × 5 =
  26. 26.61 × 5 =
  27. 27.63 × 5 =
  28. 28.96 × 5 =
  29. 29.28 × 50 =
  30. 30.24 × 5 =
  31. 31.19 × 5 =
  32. 32.13 × 5 =
  33. 33.41 × 5 =
  34. 34.26 × 5 =
  35. 35.98 × 5 =
  36. 36.21 × 50 =
  37. 37.48 × 50 =
  38. 38.43 × 50 =
  39. 39.85 × 5 =
  40. 40.20 × 5 =

Answer key

  1. 3600
  2. 110
  3. 480
  4. 3100
  5. 4550
  6. 950
  7. 285
  8. 105
  9. 1200
  10. 4100
  11. 1650
  12. 200
  13. 2950
  14. 3150
  15. 95
  16. 4550
  17. 3700
  18. 435
  19. 465
  20. 4700
  21. 225
  22. 750
  23. 335
  24. 2850
  25. 465
  26. 305
  27. 315
  28. 480
  29. 1400
  30. 120
  31. 95
  32. 65
  33. 205
  34. 130
  35. 490
  36. 1050
  37. 2400
  38. 2150
  39. 425
  40. 100

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