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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 294 · 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. 1.50 × 50 =
  2. 2.23 × 5 =
  3. 3.28 × 50 =
  4. 4.48 × 50 =
  5. 5.26 × 50 =
  6. 6.93 × 50 =
  7. 7.16 × 5 =
  8. 8.22 × 50 =
  9. 9.39 × 50 =
  10. 10.48 × 5 =
  11. 11.23 × 50 =
  12. 12.73 × 5 =
  13. 13.59 × 50 =
  14. 14.61 × 5 =
  15. 15.88 × 5 =
  16. 16.64 × 50 =
  17. 17.17 × 5 =
  18. 18.69 × 5 =
  19. 19.93 × 50 =
  20. 20.29 × 50 =
  21. 21.18 × 50 =
  22. 22.14 × 50 =
  23. 23.60 × 5 =
  24. 24.95 × 5 =
  25. 25.21 × 5 =
  26. 26.67 × 50 =
  27. 27.41 × 50 =
  28. 28.30 × 5 =
  29. 29.67 × 5 =
  30. 30.54 × 50 =
  31. 31.96 × 5 =
  32. 32.18 × 50 =
  33. 33.42 × 50 =
  34. 34.36 × 50 =
  35. 35.61 × 5 =
  36. 36.85 × 5 =
  37. 37.70 × 50 =
  38. 38.83 × 50 =
  39. 39.45 × 50 =
  40. 40.88 × 5 =

Answer key

  1. 2500
  2. 115
  3. 1400
  4. 2400
  5. 1300
  6. 4650
  7. 80
  8. 1100
  9. 1950
  10. 240
  11. 1150
  12. 365
  13. 2950
  14. 305
  15. 440
  16. 3200
  17. 85
  18. 345
  19. 4650
  20. 1450
  21. 900
  22. 700
  23. 300
  24. 475
  25. 105
  26. 3350
  27. 2050
  28. 150
  29. 335
  30. 2700
  31. 480
  32. 900
  33. 2100
  34. 1800
  35. 305
  36. 425
  37. 3500
  38. 4150
  39. 2250
  40. 440

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