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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 739 · 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. 1.16 × 5 =
  2. 2.74 × 5 =
  3. 3.91 × 50 =
  4. 4.37 × 5 =
  5. 5.48 × 5 =
  6. 6.90 × 50 =
  7. 7.76 × 50 =
  8. 8.93 × 5 =
  9. 9.69 × 5 =
  10. 10.15 × 5 =
  11. 11.20 × 5 =
  12. 12.51 × 50 =
  13. 13.37 × 50 =
  14. 14.59 × 50 =
  15. 15.36 × 50 =
  16. 16.85 × 50 =
  17. 17.53 × 50 =
  18. 18.75 × 50 =
  19. 19.65 × 50 =
  20. 20.12 × 50 =
  21. 21.40 × 50 =
  22. 22.91 × 5 =
  23. 23.32 × 5 =
  24. 24.80 × 5 =
  25. 25.69 × 5 =
  26. 26.14 × 5 =
  27. 27.51 × 5 =
  28. 28.41 × 5 =
  29. 29.53 × 50 =
  30. 30.27 × 50 =
  31. 31.84 × 5 =
  32. 32.59 × 50 =
  33. 33.41 × 50 =
  34. 34.15 × 50 =
  35. 35.36 × 50 =
  36. 36.24 × 5 =
  37. 37.47 × 5 =
  38. 38.56 × 5 =
  39. 39.83 × 5 =
  40. 40.91 × 50 =

Answer key

  1. 80
  2. 370
  3. 4550
  4. 185
  5. 240
  6. 4500
  7. 3800
  8. 465
  9. 345
  10. 75
  11. 100
  12. 2550
  13. 1850
  14. 2950
  15. 1800
  16. 4250
  17. 2650
  18. 3750
  19. 3250
  20. 600
  21. 2000
  22. 455
  23. 160
  24. 400
  25. 345
  26. 70
  27. 255
  28. 205
  29. 2650
  30. 1350
  31. 420
  32. 2950
  33. 2050
  34. 750
  35. 1800
  36. 120
  37. 235
  38. 280
  39. 415
  40. 4550

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