Question

estimate the difference.
$20\frac{5}{10} - 13\frac{6}{10} \approx \square$
round each number to the nearest whole number, then calculate.
check
you can hit the enter key to check.

Explanation:

Step1: Round first mixed number

$\frac{5}{10}=0.5$, so $20\frac{5}{10} \approx 21$

Step2: Round second mixed number

$\frac{6}{10}=0.6$, so $13\frac{6}{10} \approx 14$

Step3: Calculate the estimated difference

$21 - 14 = 7$

Answer:

7