Subtract fractions with a common denominator. The first problem illustrates the subtraction on a number line, and remaining problems do not have number lines
A. Identify and add fractions with a common denominator based on a model
B. Add fractions with a common denominator with and without a number line
C. Add fractions with a common denominator
D. Add fractions with a common denominator and convert the sum to a mixed number (Level 1)
F. Rename a mixed number as a fraction to subtract a fraction
G. Rename a fraction as an equivalent fraction
H. Add fractions with different denominators and rename the sum as a mixed number