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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 811 · 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. 1.68 × 5 =
  2. 2.61 × 5 =
  3. 3.86 × 50 =
  4. 4.83 × 5 =
  5. 5.22 × 5 =
  6. 6.34 × 5 =
  7. 7.65 × 5 =
  8. 8.13 × 5 =
  9. 9.97 × 5 =
  10. 10.89 × 5 =
  11. 11.43 × 5 =
  12. 12.85 × 50 =
  13. 13.75 × 5 =
  14. 14.28 × 50 =
  15. 15.88 × 5 =
  16. 16.85 × 50 =
  17. 17.26 × 5 =
  18. 18.19 × 5 =
  19. 19.53 × 50 =
  20. 20.16 × 50 =
  21. 21.13 × 5 =
  22. 22.21 × 50 =
  23. 23.66 × 50 =
  24. 24.67 × 5 =
  25. 25.16 × 5 =
  26. 26.60 × 5 =
  27. 27.43 × 50 =
  28. 28.62 × 50 =
  29. 29.77 × 5 =
  30. 30.91 × 50 =
  31. 31.80 × 50 =
  32. 32.54 × 5 =
  33. 33.70 × 5 =
  34. 34.45 × 5 =
  35. 35.32 × 50 =
  36. 36.30 × 50 =
  37. 37.34 × 50 =
  38. 38.27 × 5 =
  39. 39.37 × 5 =
  40. 40.18 × 5 =

Answer key

  1. 340
  2. 305
  3. 4300
  4. 415
  5. 110
  6. 170
  7. 325
  8. 65
  9. 485
  10. 445
  11. 215
  12. 4250
  13. 375
  14. 1400
  15. 440
  16. 4250
  17. 130
  18. 95
  19. 2650
  20. 800
  21. 65
  22. 1050
  23. 3300
  24. 335
  25. 80
  26. 300
  27. 2150
  28. 3100
  29. 385
  30. 4550
  31. 4000
  32. 270
  33. 350
  34. 225
  35. 1600
  36. 1500
  37. 1700
  38. 135
  39. 185
  40. 90

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