Fractions

Rohit says 1/8 is bigger than 1/4, because 8 is a bigger number than 4. Sana disagrees. Who is right?

Looking at 2/4 and 1/2, Ishaan says 2/4 must be more because the numbers are bigger. Kavya says they're actually the exact same amount. Who is right?

To add 1/2 and 1/3, Vivaan adds the top numbers and the bottom numbers separately: 1+1=2 on top, 2+3=5 on the bottom, giving 2/5. Meher says that's not how fractions add. Who is right?

Rohit says 5/8 is bigger than 3/4, because the top is 5 and 5 is bigger than 3. His sister says when the bottoms are different, looking only at the top is not enough. Who is right?

Comparing 3/4 and 5/8, Diya says 3/4 is bigger because 4 is a smaller denominator, and a smaller denominator always means a bigger fraction. Is 3/4 actually bigger, and is her reason solid?

Naina says half (1/2) a chocolate is always more than a quarter (1/4) of a chocolate, because 1/2 is a bigger fraction. Her friend says it depends on how big the chocolate is. Who is right?