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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 483 · 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. 1.66 × 50 =
  2. 2.46 × 50 =
  3. 3.21 × 50 =
  4. 4.42 × 50 =
  5. 5.31 × 5 =
  6. 6.30 × 5 =
  7. 7.95 × 5 =
  8. 8.35 × 5 =
  9. 9.96 × 5 =
  10. 10.79 × 50 =
  11. 11.16 × 50 =
  12. 12.27 × 5 =
  13. 13.86 × 5 =
  14. 14.65 × 5 =
  15. 15.79 × 50 =
  16. 16.37 × 50 =
  17. 17.19 × 5 =
  18. 18.48 × 5 =
  19. 19.36 × 5 =
  20. 20.21 × 50 =
  21. 21.55 × 50 =
  22. 22.21 × 50 =
  23. 23.40 × 5 =
  24. 24.78 × 5 =
  25. 25.94 × 5 =
  26. 26.23 × 5 =
  27. 27.25 × 5 =
  28. 28.17 × 5 =
  29. 29.48 × 5 =
  30. 30.43 × 5 =
  31. 31.26 × 5 =
  32. 32.43 × 5 =
  33. 33.61 × 5 =
  34. 34.41 × 5 =
  35. 35.90 × 5 =
  36. 36.69 × 5 =
  37. 37.44 × 50 =
  38. 38.55 × 50 =
  39. 39.40 × 5 =
  40. 40.96 × 50 =

Answer key

  1. 3300
  2. 2300
  3. 1050
  4. 2100
  5. 155
  6. 150
  7. 475
  8. 175
  9. 480
  10. 3950
  11. 800
  12. 135
  13. 430
  14. 325
  15. 3950
  16. 1850
  17. 95
  18. 240
  19. 180
  20. 1050
  21. 2750
  22. 1050
  23. 200
  24. 390
  25. 470
  26. 115
  27. 125
  28. 85
  29. 240
  30. 215
  31. 130
  32. 215
  33. 305
  34. 205
  35. 450
  36. 345
  37. 2200
  38. 2750
  39. 200
  40. 4800

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