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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 518 · 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. 1.57 × 5 =
  2. 2.14 × 50 =
  3. 3.16 × 5 =
  4. 4.87 × 50 =
  5. 5.77 × 5 =
  6. 6.53 × 5 =
  7. 7.52 × 5 =
  8. 8.20 × 50 =
  9. 9.35 × 50 =
  10. 10.17 × 5 =
  11. 11.79 × 5 =
  12. 12.27 × 5 =
  13. 13.19 × 50 =
  14. 14.30 × 5 =
  15. 15.15 × 5 =
  16. 16.85 × 5 =
  17. 17.65 × 50 =
  18. 18.85 × 50 =
  19. 19.75 × 5 =
  20. 20.54 × 5 =
  21. 21.66 × 50 =
  22. 22.61 × 50 =
  23. 23.31 × 5 =
  24. 24.76 × 5 =
  25. 25.57 × 50 =
  26. 26.92 × 5 =
  27. 27.22 × 50 =
  28. 28.24 × 50 =
  29. 29.66 × 5 =
  30. 30.96 × 50 =
  31. 31.45 × 50 =
  32. 32.55 × 5 =
  33. 33.13 × 5 =
  34. 34.72 × 5 =
  35. 35.75 × 50 =
  36. 36.92 × 5 =
  37. 37.70 × 5 =
  38. 38.59 × 5 =
  39. 39.29 × 5 =
  40. 40.83 × 5 =

Answer key

  1. 285
  2. 700
  3. 80
  4. 4350
  5. 385
  6. 265
  7. 260
  8. 1000
  9. 1750
  10. 85
  11. 395
  12. 135
  13. 950
  14. 150
  15. 75
  16. 425
  17. 3250
  18. 4250
  19. 375
  20. 270
  21. 3300
  22. 3050
  23. 155
  24. 380
  25. 2850
  26. 460
  27. 1100
  28. 1200
  29. 330
  30. 4800
  31. 2250
  32. 275
  33. 65
  34. 360
  35. 3750
  36. 460
  37. 350
  38. 295
  39. 145
  40. 415

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