Evaluate: 3/5 + 1/5 = ?

The correct answer is 4/5. When adding fractions with the same denominator, you simply add the numerators and keep the denominator unchanged.

Addition of Like Fractions

• Rule: If the denominators are equal, add the numerators and write the result over the common denominator.
  
  a/c + b/c = (a + b)/c
• Applying the Rule:
  
  3/5 + 1/5 = (3 + 1) / 5 = 4/5
• Why Other Options Are Incorrect:
  • 2/5: This would be 3/5 − 1/5, not addition.
  • 3/5: Adding 0, not 1/5.
  • 5/10: 5/10 simplifies to 1/2, which is not the sum. Also, adding denominators (5+5=10) is a common mistake.

Thus, 3/5 + 1/5 = 4/5.