5 Grade Math Problems: - CCSS.MATH.CONTENT.5.NF.A.1 Use equivalent fractions as a strategy to add and subtract fractions. - CCSS.MATH.CONTENT.5.NF.A.2 Solve word problems involving addition and subtraction of fractions referring to the same whole. - CCSS.MATH.CONTENT.5.NF.B.3 Interpret a fraction as division of the numerator by the denominator.