Answer
Estimate=0 or less than 1
Exact=$\frac{1}{16}$
Work Step by Step
Estimate:
1$\frac{7}{16}$$\approx$1
1$\frac{3}{16}$$\approx$1
1-1=0 (less than 1)
Exact:
1$\frac{7}{16}$-1$\frac{3}{8}$
1$\frac{7}{16}$-$\frac{6}{16}$
$\frac{1}{16}$