What is $\frac{1}{5}+\frac{1}{5}$15+15?
Find the value of $\frac{1}{2}-\frac{1}{2}$12−12.
Find the value of $\frac{2}{5}-\frac{1}{5}$25−15.
Find the value of $\frac{6}{8}+\frac{1}{8}$68+18.
Understand a fraction a/b with a > 1 as a sum of fractions 1/b. In other words, any fraction is a sum of unit fractions.
Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.
Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators.