Subtract Fractions and Mixed Numbers with Like Denominators

We can use models to subtract the fractions with like denominators. For example, to find 3/8 – 1/8:
3/8 can be modeled as 3 equal rectangles, each rectangle representing 1/8.
Take away 1/8 from 3/8 to model 3/8 – 1/8

To subtract fractions with like denominators, subtract the numerators, retain the common denominator, and then simplify

To subtract two mixed numbers, first subtract the fraction parts, then subtract the whole number parts, add the two results and then simplify

Sometimes we need to rename to simplify the difference. For example, 3 1/4 – 1 3/4 = 2 5/4 – 1 3/4