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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 292 · 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. 1.82 × 50 =
  2. 2.48 × 5 =
  3. 3.69 × 50 =
  4. 4.37 × 5 =
  5. 5.89 × 5 =
  6. 6.59 × 50 =
  7. 7.21 × 50 =
  8. 8.93 × 5 =
  9. 9.24 × 5 =
  10. 10.70 × 50 =
  11. 11.65 × 5 =
  12. 12.35 × 5 =
  13. 13.56 × 5 =
  14. 14.60 × 5 =
  15. 15.43 × 5 =
  16. 16.90 × 50 =
  17. 17.18 × 50 =
  18. 18.38 × 50 =
  19. 19.82 × 50 =
  20. 20.50 × 50 =
  21. 21.67 × 50 =
  22. 22.49 × 50 =
  23. 23.28 × 50 =
  24. 24.47 × 50 =
  25. 25.51 × 5 =
  26. 26.46 × 50 =
  27. 27.51 × 5 =
  28. 28.40 × 50 =
  29. 29.36 × 50 =
  30. 30.85 × 50 =
  31. 31.64 × 50 =
  32. 32.17 × 50 =
  33. 33.19 × 50 =
  34. 34.17 × 5 =
  35. 35.37 × 5 =
  36. 36.36 × 50 =
  37. 37.37 × 5 =
  38. 38.63 × 5 =
  39. 39.77 × 50 =
  40. 40.18 × 5 =

Answer key

  1. 4100
  2. 240
  3. 3450
  4. 185
  5. 445
  6. 2950
  7. 1050
  8. 465
  9. 120
  10. 3500
  11. 325
  12. 175
  13. 280
  14. 300
  15. 215
  16. 4500
  17. 900
  18. 1900
  19. 4100
  20. 2500
  21. 3350
  22. 2450
  23. 1400
  24. 2350
  25. 255
  26. 2300
  27. 255
  28. 2000
  29. 1800
  30. 4250
  31. 3200
  32. 850
  33. 950
  34. 85
  35. 185
  36. 1800
  37. 185
  38. 315
  39. 3850
  40. 90

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