2.1 What are fractions?
2.2 Calculating Fractions
2.3 Equivalent Fractions
2.4 Simplifying Fractions
2.5 Improper Fractions
2.6 Adding Fractions
2.7 Adding Fractions with the Same Denominator
2.8 Adding Fractions with Different Denominators
2.9 Subtracting Fractions
2.10 Subtracting Fractions with the Same Denominator
2.11 Subtracting Fractions with Different Denominators
