Question

Convert to a decimal number:
$\frac{11}{40}$

Answer 1

In $\frac{11}{40}$ the denominator can be made a multiple of $100$ by multiplying the numerator and denominator both by $10$.
That is,
$\frac{11\times 10}{40\times 10}=\frac{110}{400}$
Now, $\frac{110}{4\times 100}=\frac{27.5}{100}$ can be written in decimal form as $0.275$, just placing the decimal two places from the right.
Thus, $\frac{11}{40}$can be written in decimal form as $0.275$