Question

1. $3\frac{3}{8}+1\frac{5}{8}=1\frac{1}{8}$ (note: there may be a writing error in the original problem, and the correct calculation should be for the addition of mixed numbers)

Explanation:

Step1: Convert mixed numbers to improper fractions

$3\frac{3}{8} = \frac{3\times8 + 3}{8} = \frac{27}{8}$, $7\frac{5}{8} = \frac{7\times8 + 5}{8} = \frac{61}{8}$

Step2: Add the improper fractions

$\frac{27}{8} + \frac{61}{8} = \frac{27 + 61}{8} = \frac{88}{8}$

Step3: Simplify the resulting fraction

$\frac{88}{8} = 11$

Answer:

11