1 .Visualizing addition of similar fractions: 1/4 + 2/4 = n + = 1/4 + 2/4 = 3/4
2. Visualizing subtraction of similar fractions: 3/5 − 2/5 = n − = 3/5 − 2/5 = 1/5
3. Visualizing addition of dissimilar fractions : 2/3 + 1/5 = n + = 2/3 + 1/5 = 13/15
4. Visualizing subtraction of dissimilar fractions: 3/4 − 1/2 = n − = 3/4 − 1/2 = 1/4​