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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 719 · 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. 1.95 × 50 =
  2. 2.63 × 5 =
  3. 3.18 × 5 =
  4. 4.59 × 50 =
  5. 5.26 × 5 =
  6. 6.36 × 50 =
  7. 7.71 × 5 =
  8. 8.24 × 5 =
  9. 9.20 × 50 =
  10. 10.15 × 50 =
  11. 11.39 × 50 =
  12. 12.67 × 5 =
  13. 13.56 × 5 =
  14. 14.89 × 5 =
  15. 15.17 × 5 =
  16. 16.59 × 5 =
  17. 17.30 × 50 =
  18. 18.39 × 5 =
  19. 19.87 × 50 =
  20. 20.42 × 50 =
  21. 21.78 × 5 =
  22. 22.74 × 50 =
  23. 23.38 × 50 =
  24. 24.38 × 5 =
  25. 25.74 × 5 =
  26. 26.34 × 50 =
  27. 27.26 × 5 =
  28. 28.31 × 50 =
  29. 29.50 × 5 =
  30. 30.24 × 5 =
  31. 31.24 × 5 =
  32. 32.80 × 5 =
  33. 33.88 × 5 =
  34. 34.16 × 5 =
  35. 35.86 × 50 =
  36. 36.37 × 5 =
  37. 37.17 × 5 =
  38. 38.56 × 5 =
  39. 39.39 × 50 =
  40. 40.19 × 5 =

Answer key

  1. 4750
  2. 315
  3. 90
  4. 2950
  5. 130
  6. 1800
  7. 355
  8. 120
  9. 1000
  10. 750
  11. 1950
  12. 335
  13. 280
  14. 445
  15. 85
  16. 295
  17. 1500
  18. 195
  19. 4350
  20. 2100
  21. 390
  22. 3700
  23. 1900
  24. 190
  25. 370
  26. 1700
  27. 130
  28. 1550
  29. 250
  30. 120
  31. 120
  32. 400
  33. 440
  34. 80
  35. 4300
  36. 185
  37. 85
  38. 280
  39. 1950
  40. 95

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