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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 204 · 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. 2.26 × 5 =
  3. 3.84 × 50 =
  4. 4.73 × 5 =
  5. 5.25 × 5 =
  6. 6.61 × 50 =
  7. 7.26 × 50 =
  8. 8.16 × 50 =
  9. 9.73 × 50 =
  10. 10.54 × 5 =
  11. 11.75 × 5 =
  12. 12.62 × 50 =
  13. 13.92 × 50 =
  14. 14.29 × 50 =
  15. 15.33 × 5 =
  16. 16.42 × 5 =
  17. 17.98 × 50 =
  18. 18.73 × 5 =
  19. 19.28 × 5 =
  20. 20.60 × 5 =
  21. 21.23 × 5 =
  22. 22.61 × 5 =
  23. 23.13 × 5 =
  24. 24.60 × 50 =
  25. 25.22 × 50 =
  26. 26.34 × 50 =
  27. 27.39 × 50 =
  28. 28.81 × 50 =
  29. 29.80 × 5 =
  30. 30.90 × 5 =
  31. 31.17 × 5 =
  32. 32.33 × 5 =
  33. 33.73 × 5 =
  34. 34.93 × 5 =
  35. 35.66 × 50 =
  36. 36.34 × 5 =
  37. 37.15 × 50 =
  38. 38.56 × 5 =
  39. 39.77 × 5 =
  40. 40.47 × 5 =

Answer key

  1. 285
  2. 130
  3. 4200
  4. 365
  5. 125
  6. 3050
  7. 1300
  8. 800
  9. 3650
  10. 270
  11. 375
  12. 3100
  13. 4600
  14. 1450
  15. 165
  16. 210
  17. 4900
  18. 365
  19. 140
  20. 300
  21. 115
  22. 305
  23. 65
  24. 3000
  25. 1100
  26. 1700
  27. 1950
  28. 4050
  29. 400
  30. 450
  31. 85
  32. 165
  33. 365
  34. 465
  35. 3300
  36. 170
  37. 750
  38. 280
  39. 385
  40. 235

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