Answer
Estimate: 3 + 5 = 8
Exact: $7\frac{7}{8}$
Work Step by Step
$3\frac{3}{8}+4\frac{1}{2}$
First Lets Find Estimate:
$3\frac{3}{8}$ rounds to 3
$4\frac{1}{2}$ rounds to 5
Now, $3\frac{3}{8}+4\frac{1}{2}$ = 3 + 5 = 8
Now find Exact:
$3\frac{3}{8}+4\frac{1}{2}$
= $\frac{3\times8+3}{8}+\frac{4\times2+1}{2}$
= $\frac{27}{8}+\frac{9}{2}$
= $\frac{27}{8}+\frac{9\times4}{2\times4}$ (LCM of 2 & 8 are 8)
= $\frac{27}{8}+\frac{36}{8}$
= $\frac{27+36}{8}$
= $\frac{63}{8}$
= $7\frac{7}{8}$
