Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three-digit numbers together. When you do column addition, you lay out the numbers you are adding ...

\(\frac{3}{10}\) means three tenths, and is written as \(0.3\). \(\frac{17}{100}\) means seventeen hundredths, and is written as \(0.17\). Similarly, \(0.2\) becomes ...