A percentage is like a fraction over $100$ and taking a percentage ‘of’ something means multiplying it by the fraction, e.g. $20\%$ of $15$ means
\begin{align*}
\frac{20}{100} \times 15 &= \frac{20\times15}{100}\\
&= \frac{300}{100}\\
&= 3
\end{align*}

Show practice questions

Find $30\%$ of $24$.

Show answer

$\dfrac{30}{100} \times 24 = \dfrac{720}{100} = 7.2$

Find $74\%$ of $2$.

Show answer

$\dfrac{74}{100} \times 2 = \dfrac{148}{100} = 1.48$

Find $6\%$ of $130$.

Show answer

$\dfrac{6}{100} \times 130 = \dfrac{780}{100} = 7.8$

Find $80\%$ of $30$.

Show answer

$\dfrac{80}{100} \times 30 = \dfrac{2400}{100} = 24$

Find $2\%$ of $106$.

Show answer

$\dfrac{2}{100} \times 106 = \dfrac{212}{100} = 2.12$

Add these questions to my cards

About practice questions

The quickest way to perform a percentage increase on a calculator is to multiply by $1$ plus the percentage as a decimal. E.g. to find $12$ increased by $5\%$, type $12\times1.05$ into your calculator.

Similarly, to decrease something by a percentage, multiply by $1$ minus the percentage as a decimal. E.g. to find $152$ decreased by $3\%$, type $152\times0.97$ into your calculator.

Show practice questions

How would you find $20$ increased by $6\%$ using a calculator?

Show answer

How would you find $333$ increased by $24\%$ using a calculator?

Show answer

How would you find $7$ increased by $30\%$ using a calculator?

Show answer

How would you find $82$ increased by $4\%$ using a calculator?

Show answer

How would you find $36$ decreased by $9\%$ using a calculator?

Show answer

How would you find $170$ decreased by $30\%$ using a calculator?

Show answer

How would you find $85$ decreased by $7\%$ using a calculator?

Show answer

How would you find $201$ decreased by $45\%$ using a calculator?

Show answer

Add these questions to my cards

About practice questions