Question

estimate: $\frac{2}{5}+\frac{1}{6}=$ ___
a $\frac{2}{30}$
b $\frac{3}{11}$
c $\frac{1}{2}$
d 1

Explanation:

Step1: Estimate each fraction

$\frac{2}{5} \approx 0.4$, $\frac{1}{6} \approx 0.17$

Step2: Add the estimated values

$0.4 + 0.17 = 0.57$

Step3: Match to closest option

$0.57$ is closest to $\frac{1}{2}=0.5$

Answer:

C. $\frac{1}{2}$