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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 671 · 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. 1.31 × 50 =
  2. 2.65 × 5 =
  3. 3.26 × 50 =
  4. 4.56 × 5 =
  5. 5.87 × 5 =
  6. 6.29 × 5 =
  7. 7.30 × 50 =
  8. 8.19 × 50 =
  9. 9.96 × 50 =
  10. 10.60 × 5 =
  11. 11.67 × 5 =
  12. 12.46 × 5 =
  13. 13.19 × 50 =
  14. 14.44 × 5 =
  15. 15.87 × 50 =
  16. 16.50 × 5 =
  17. 17.19 × 5 =
  18. 18.19 × 5 =
  19. 19.14 × 5 =
  20. 20.98 × 50 =
  21. 21.41 × 5 =
  22. 22.16 × 5 =
  23. 23.52 × 5 =
  24. 24.24 × 5 =
  25. 25.60 × 5 =
  26. 26.43 × 50 =
  27. 27.59 × 5 =
  28. 28.69 × 50 =
  29. 29.27 × 5 =
  30. 30.14 × 50 =
  31. 31.83 × 5 =
  32. 32.77 × 50 =
  33. 33.92 × 5 =
  34. 34.37 × 5 =
  35. 35.87 × 5 =
  36. 36.14 × 5 =
  37. 37.18 × 50 =
  38. 38.68 × 5 =
  39. 39.91 × 5 =
  40. 40.46 × 5 =

Answer key

  1. 1550
  2. 325
  3. 1300
  4. 280
  5. 435
  6. 145
  7. 1500
  8. 950
  9. 4800
  10. 300
  11. 335
  12. 230
  13. 950
  14. 220
  15. 4350
  16. 250
  17. 95
  18. 95
  19. 70
  20. 4900
  21. 205
  22. 80
  23. 260
  24. 120
  25. 300
  26. 2150
  27. 295
  28. 3450
  29. 135
  30. 700
  31. 415
  32. 3850
  33. 460
  34. 185
  35. 435
  36. 70
  37. 900
  38. 340
  39. 455
  40. 230

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