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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 45 · 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. 2.22 × 50 =
  3. 3.77 × 5 =
  4. 4.66 × 50 =
  5. 5.84 × 5 =
  6. 6.22 × 5 =
  7. 7.69 × 50 =
  8. 8.19 × 50 =
  9. 9.52 × 50 =
  10. 10.70 × 5 =
  11. 11.40 × 50 =
  12. 12.35 × 5 =
  13. 13.25 × 5 =
  14. 14.16 × 50 =
  15. 15.32 × 50 =
  16. 16.55 × 5 =
  17. 17.98 × 5 =
  18. 18.62 × 50 =
  19. 19.46 × 50 =
  20. 20.20 × 50 =
  21. 21.29 × 5 =
  22. 22.85 × 5 =
  23. 23.31 × 5 =
  24. 24.29 × 5 =
  25. 25.56 × 50 =
  26. 26.13 × 50 =
  27. 27.79 × 50 =
  28. 28.28 × 5 =
  29. 29.62 × 5 =
  30. 30.41 × 50 =
  31. 31.42 × 5 =
  32. 32.46 × 50 =
  33. 33.56 × 5 =
  34. 34.73 × 5 =
  35. 35.19 × 50 =
  36. 36.32 × 50 =
  37. 37.16 × 50 =
  38. 38.19 × 5 =
  39. 39.76 × 50 =
  40. 40.30 × 5 =

Answer key

  1. 315
  2. 1100
  3. 385
  4. 3300
  5. 420
  6. 110
  7. 3450
  8. 950
  9. 2600
  10. 350
  11. 2000
  12. 175
  13. 125
  14. 800
  15. 1600
  16. 275
  17. 490
  18. 3100
  19. 2300
  20. 1000
  21. 145
  22. 425
  23. 155
  24. 145
  25. 2800
  26. 650
  27. 3950
  28. 140
  29. 310
  30. 2050
  31. 210
  32. 2300
  33. 280
  34. 365
  35. 950
  36. 1600
  37. 800
  38. 95
  39. 3800
  40. 150

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