Question

Complete the addition and subtraction box.

Answer 1

Step 1. Add.

Add column wise:

$$\begin{gathered} \frac{1}{2}+\frac{1}{3}=\frac{3+2}{6} \\ =\frac{5}{6} \\ \frac{1}{3}+\frac{1}{4}=\frac{4+3}{12} \\ =\frac{7}{12} \end{gathered}$$

Step 2. Subtract.

Subtract row wise:

$$\begin{gathered} \frac{1}{2}-\frac{1}{3}=\frac{3-2}{6} \\ =\frac{1}{6} \\ \frac{1}{3}-\frac{1}{4}=\frac{4-3}{12} \\ =\frac{1}{12} \end{gathered}$$