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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 764 · 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. 1.88 × 50 =
  2. 2.89 × 50 =
  3. 3.81 × 5 =
  4. 4.60 × 5 =
  5. 5.29 × 5 =
  6. 6.73 × 5 =
  7. 7.88 × 50 =
  8. 8.21 × 5 =
  9. 9.17 × 50 =
  10. 10.15 × 50 =
  11. 11.18 × 50 =
  12. 12.60 × 50 =
  13. 13.35 × 50 =
  14. 14.86 × 5 =
  15. 15.67 × 50 =
  16. 16.46 × 5 =
  17. 17.33 × 5 =
  18. 18.28 × 50 =
  19. 19.28 × 5 =
  20. 20.69 × 50 =
  21. 21.69 × 5 =
  22. 22.96 × 50 =
  23. 23.87 × 50 =
  24. 24.41 × 50 =
  25. 25.56 × 5 =
  26. 26.62 × 5 =
  27. 27.17 × 5 =
  28. 28.40 × 5 =
  29. 29.94 × 50 =
  30. 30.42 × 5 =
  31. 31.93 × 5 =
  32. 32.19 × 50 =
  33. 33.60 × 5 =
  34. 34.25 × 5 =
  35. 35.56 × 50 =
  36. 36.42 × 50 =
  37. 37.21 × 50 =
  38. 38.43 × 5 =
  39. 39.50 × 50 =
  40. 40.54 × 5 =

Answer key

  1. 4400
  2. 4450
  3. 405
  4. 300
  5. 145
  6. 365
  7. 4400
  8. 105
  9. 850
  10. 750
  11. 900
  12. 3000
  13. 1750
  14. 430
  15. 3350
  16. 230
  17. 165
  18. 1400
  19. 140
  20. 3450
  21. 345
  22. 4800
  23. 4350
  24. 2050
  25. 280
  26. 310
  27. 85
  28. 200
  29. 4700
  30. 210
  31. 465
  32. 950
  33. 300
  34. 125
  35. 2800
  36. 2100
  37. 1050
  38. 215
  39. 2500
  40. 270

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