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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 104 · 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. 1.87 × 50 =
  2. 2.26 × 50 =
  3. 3.36 × 5 =
  4. 4.51 × 50 =
  5. 5.43 × 50 =
  6. 6.57 × 50 =
  7. 7.86 × 5 =
  8. 8.70 × 50 =
  9. 9.33 × 5 =
  10. 10.24 × 50 =
  11. 11.51 × 50 =
  12. 12.37 × 5 =
  13. 13.15 × 50 =
  14. 14.43 × 5 =
  15. 15.18 × 5 =
  16. 16.24 × 50 =
  17. 17.17 × 50 =
  18. 18.77 × 50 =
  19. 19.36 × 50 =
  20. 20.74 × 5 =
  21. 21.84 × 5 =
  22. 22.58 × 5 =
  23. 23.75 × 5 =
  24. 24.74 × 5 =
  25. 25.78 × 5 =
  26. 26.49 × 5 =
  27. 27.27 × 5 =
  28. 28.75 × 50 =
  29. 29.98 × 50 =
  30. 30.14 × 50 =
  31. 31.73 × 5 =
  32. 32.53 × 50 =
  33. 33.31 × 50 =
  34. 34.36 × 5 =
  35. 35.39 × 50 =
  36. 36.57 × 5 =
  37. 37.61 × 5 =
  38. 38.66 × 5 =
  39. 39.56 × 50 =
  40. 40.26 × 5 =

Answer key

  1. 4350
  2. 1300
  3. 180
  4. 2550
  5. 2150
  6. 2850
  7. 430
  8. 3500
  9. 165
  10. 1200
  11. 2550
  12. 185
  13. 750
  14. 215
  15. 90
  16. 1200
  17. 850
  18. 3850
  19. 1800
  20. 370
  21. 420
  22. 290
  23. 375
  24. 370
  25. 390
  26. 245
  27. 135
  28. 3750
  29. 4900
  30. 700
  31. 365
  32. 2650
  33. 1550
  34. 180
  35. 1950
  36. 285
  37. 305
  38. 330
  39. 2800
  40. 130

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