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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 465 · 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. 1.63 × 5 =
  2. 2.42 × 50 =
  3. 3.64 × 50 =
  4. 4.96 × 50 =
  5. 5.92 × 5 =
  6. 6.76 × 50 =
  7. 7.43 × 5 =
  8. 8.35 × 5 =
  9. 9.60 × 50 =
  10. 10.76 × 50 =
  11. 11.26 × 50 =
  12. 12.67 × 5 =
  13. 13.91 × 5 =
  14. 14.97 × 5 =
  15. 15.67 × 50 =
  16. 16.84 × 5 =
  17. 17.19 × 50 =
  18. 18.76 × 50 =
  19. 19.16 × 50 =
  20. 20.33 × 50 =
  21. 21.95 × 5 =
  22. 22.28 × 5 =
  23. 23.36 × 5 =
  24. 24.39 × 50 =
  25. 25.12 × 50 =
  26. 26.78 × 5 =
  27. 27.34 × 50 =
  28. 28.85 × 50 =
  29. 29.44 × 5 =
  30. 30.17 × 50 =
  31. 31.63 × 5 =
  32. 32.96 × 5 =
  33. 33.36 × 5 =
  34. 34.54 × 5 =
  35. 35.60 × 50 =
  36. 36.73 × 50 =
  37. 37.76 × 50 =
  38. 38.49 × 5 =
  39. 39.12 × 50 =
  40. 40.97 × 50 =

Answer key

  1. 315
  2. 2100
  3. 3200
  4. 4800
  5. 460
  6. 3800
  7. 215
  8. 175
  9. 3000
  10. 3800
  11. 1300
  12. 335
  13. 455
  14. 485
  15. 3350
  16. 420
  17. 950
  18. 3800
  19. 800
  20. 1650
  21. 475
  22. 140
  23. 180
  24. 1950
  25. 600
  26. 390
  27. 1700
  28. 4250
  29. 220
  30. 850
  31. 315
  32. 480
  33. 180
  34. 270
  35. 3000
  36. 3650
  37. 3800
  38. 245
  39. 600
  40. 4850

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