Question

estimate the difference using benchmarks.
$\frac{10}{11}-\frac{2}{5}$
0
$\frac{1}{2}$
1

Explanation:

Step1: Estimate $\frac{10}{11}$

$\frac{10}{11}$ is close to 1 since 10 is almost 11.

Step2: Estimate $\frac{2}{5}$

$\frac{2}{5}= 0.4$, which is close to $\frac{1}{2}=0.5$.

Step3: Calculate the estimated difference

$1-\frac{1}{2}=\frac{1}{2}$

Answer:

$\frac{1}{2}$