Question

which is the most accurate way to estimate 22% of 487?
\\(\frac{3}{4} \times 480\\)
\\(\frac{19}{20} \times 480\\)
\\(\frac{1}{10} \times 490\\)
\\(\frac{1}{5} \times 490\\)

Explanation:

Step1: Convert percentage to fraction

$22\%=\frac{22}{100}=\frac{11}{50}\approx\frac{1}{5}$ (since $\frac{1}{5} = 0.2$ and $\frac{11}{50}=0.22$).

Step2: Round the number

$487\approx490$.

Answer:

$\frac{1}{5}\times490$