Question

Write the following in decimal notation:

$2\frac{1}{2}$

Answer 1

Step 1

Break the given number into an integer part and a fractional part.

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

Step 2

Convert only fractional part into decimal ( divide numerator by denominator). No need to do anything with the integer part.

$\frac{1}{2}=\frac{1\times 5}{2\times 5}=\frac{5}{10}=0.5$

Step 3

Add integer part and decimal value of the fractional part.

$2+0.5=2.5$

Hence the decimal notation of $2\frac{1}{2}$ is $2.5$