Question

Find the sum of the given numbers: $\frac{7}{100}+\frac{250}{1000}+\frac{45}{10,000}$

• A. $0.3245$
• B. $0.32$
• C. $3.245$
• D. $0.324$

Answer 1

The correct option is A $0.3245$

$\frac{7}{100}+\frac{250}{1000}+\frac{45}{10,000}$

Step $1:$ Make the denominators equal.

$=\frac{7\times 100}{100\times 100}+\frac{250\times 10}{1000\times 10}+\frac{45}{10,000}$

$=\frac{700}{10,000}+\frac{2500}{10,000}+\frac{45}{10,000}$

Step $2:$ The denominator is common, hence, add the numerators.

$=\frac{700+2500+45}{10000}$

$=\frac{3245}{10000}$

Step $3:$ There are $4$ zeroes in the denominator and hence, the decimal will be placed $4$ places from the right in the numerator.

​​​​​​​​​​​​​​$=0.3245$