Here are some of my favorite activities and games for adding and subtracting fractions!
Example 1: If the denominators are the same, add or subtract the numerators and keep the denominator the same. Simplify if needed.
Example 2: If the denominators are not the same, find the least common multiple. Then use the least common multiple to find equivalents with denominators the same. Next, add the numerators and simplify if needed.
Here are some great internet resources: