Question

Evaluate: $\left(0.3\right)\times \left(0.3\right)-\left(0.2\right)\times \left(0.2\right)$

Answer 1

Step: Find the value

To evaluate: $\left(0.3\right)\times \left(0.3\right)-\left(0.2\right)\times \left(0.2\right)$

$\left(\frac{3}{10}\right)\times \left(\frac{3}{10}\right)-\left(\frac{2}{10}\right)\times \left(\frac{2}{10}\right)$

$=\frac{9}{100}-\frac{4}{100}=\frac{9-4}{100}$

$=\frac{5}{100}$

$=0.05$

Hence, the value of $\left(0.3\right)\times \left(0.3\right)-\left(0.2\right)\times \left(0.2\right)$ is $0.05$.