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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 257 · 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. 1.95 × 5 =
  2. 2.15 × 50 =
  3. 3.85 × 50 =
  4. 4.17 × 5 =
  5. 5.80 × 5 =
  6. 6.16 × 50 =
  7. 7.82 × 5 =
  8. 8.52 × 5 =
  9. 9.69 × 5 =
  10. 10.51 × 50 =
  11. 11.92 × 50 =
  12. 12.12 × 5 =
  13. 13.80 × 50 =
  14. 14.68 × 5 =
  15. 15.53 × 5 =
  16. 16.18 × 50 =
  17. 17.71 × 50 =
  18. 18.80 × 5 =
  19. 19.61 × 50 =
  20. 20.14 × 5 =
  21. 21.93 × 5 =
  22. 22.35 × 50 =
  23. 23.36 × 50 =
  24. 24.27 × 50 =
  25. 25.32 × 5 =
  26. 26.26 × 5 =
  27. 27.31 × 50 =
  28. 28.66 × 50 =
  29. 29.66 × 5 =
  30. 30.35 × 5 =
  31. 31.66 × 50 =
  32. 32.78 × 5 =
  33. 33.98 × 5 =
  34. 34.45 × 5 =
  35. 35.20 × 50 =
  36. 36.55 × 5 =
  37. 37.22 × 5 =
  38. 38.21 × 5 =
  39. 39.40 × 5 =
  40. 40.98 × 50 =

Answer key

  1. 475
  2. 750
  3. 4250
  4. 85
  5. 400
  6. 800
  7. 410
  8. 260
  9. 345
  10. 2550
  11. 4600
  12. 60
  13. 4000
  14. 340
  15. 265
  16. 900
  17. 3550
  18. 400
  19. 3050
  20. 70
  21. 465
  22. 1750
  23. 1800
  24. 1350
  25. 160
  26. 130
  27. 1550
  28. 3300
  29. 330
  30. 175
  31. 3300
  32. 390
  33. 490
  34. 225
  35. 1000
  36. 275
  37. 110
  38. 105
  39. 200
  40. 4900

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