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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 299 · 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. 1.55 × 50 =
  2. 2.32 × 50 =
  3. 3.42 × 5 =
  4. 4.28 × 50 =
  5. 5.91 × 50 =
  6. 6.27 × 50 =
  7. 7.45 × 5 =
  8. 8.71 × 5 =
  9. 9.62 × 50 =
  10. 10.56 × 5 =
  11. 11.26 × 5 =
  12. 12.16 × 50 =
  13. 13.56 × 5 =
  14. 14.88 × 5 =
  15. 15.37 × 50 =
  16. 16.66 × 50 =
  17. 17.28 × 50 =
  18. 18.89 × 50 =
  19. 19.30 × 5 =
  20. 20.80 × 50 =
  21. 21.55 × 5 =
  22. 22.86 × 50 =
  23. 23.14 × 50 =
  24. 24.61 × 5 =
  25. 25.93 × 5 =
  26. 26.43 × 50 =
  27. 27.74 × 5 =
  28. 28.82 × 50 =
  29. 29.83 × 50 =
  30. 30.77 × 5 =
  31. 31.74 × 5 =
  32. 32.67 × 5 =
  33. 33.35 × 5 =
  34. 34.48 × 5 =
  35. 35.35 × 5 =
  36. 36.28 × 5 =
  37. 37.53 × 5 =
  38. 38.36 × 50 =
  39. 39.13 × 5 =
  40. 40.69 × 5 =

Answer key

  1. 2750
  2. 1600
  3. 210
  4. 1400
  5. 4550
  6. 1350
  7. 225
  8. 355
  9. 3100
  10. 280
  11. 130
  12. 800
  13. 280
  14. 440
  15. 1850
  16. 3300
  17. 1400
  18. 4450
  19. 150
  20. 4000
  21. 275
  22. 4300
  23. 700
  24. 305
  25. 465
  26. 2150
  27. 370
  28. 4100
  29. 4150
  30. 385
  31. 370
  32. 335
  33. 175
  34. 240
  35. 175
  36. 140
  37. 265
  38. 1800
  39. 65
  40. 345

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