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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 362 · 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. 1.61 × 50 =
  2. 2.19 × 50 =
  3. 3.31 × 5 =
  4. 4.63 × 5 =
  5. 5.30 × 5 =
  6. 6.67 × 5 =
  7. 7.90 × 5 =
  8. 8.88 × 5 =
  9. 9.90 × 50 =
  10. 10.87 × 5 =
  11. 11.68 × 50 =
  12. 12.66 × 50 =
  13. 13.70 × 50 =
  14. 14.63 × 5 =
  15. 15.86 × 5 =
  16. 16.24 × 5 =
  17. 17.20 × 5 =
  18. 18.81 × 5 =
  19. 19.70 × 5 =
  20. 20.79 × 5 =
  21. 21.96 × 50 =
  22. 22.35 × 5 =
  23. 23.64 × 5 =
  24. 24.71 × 5 =
  25. 25.93 × 50 =
  26. 26.29 × 50 =
  27. 27.46 × 50 =
  28. 28.57 × 50 =
  29. 29.90 × 50 =
  30. 30.74 × 50 =
  31. 31.84 × 50 =
  32. 32.82 × 5 =
  33. 33.50 × 5 =
  34. 34.91 × 50 =
  35. 35.25 × 5 =
  36. 36.61 × 5 =
  37. 37.13 × 5 =
  38. 38.64 × 50 =
  39. 39.41 × 5 =
  40. 40.61 × 5 =

Answer key

  1. 3050
  2. 950
  3. 155
  4. 315
  5. 150
  6. 335
  7. 450
  8. 440
  9. 4500
  10. 435
  11. 3400
  12. 3300
  13. 3500
  14. 315
  15. 430
  16. 120
  17. 100
  18. 405
  19. 350
  20. 395
  21. 4800
  22. 175
  23. 320
  24. 355
  25. 4650
  26. 1450
  27. 2300
  28. 2850
  29. 4500
  30. 3700
  31. 4200
  32. 410
  33. 250
  34. 4550
  35. 125
  36. 305
  37. 65
  38. 3200
  39. 205
  40. 305

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