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number and a unit fraction. Given a multiplication problem involving a whole number and a fraction, Use a visual representation of the problem, understanding of unit fractions, and properties of the operation of multiplication to justify n x (a/b) = (n x a)/b, Given a word problem involving the multiplication of a fraction by a whole number, Explain and justify solutions and the reasonableness of solutions using connections among unit fractions, visual representations, and an understanding of multiplication. Strategies for representing and solving multiplication problems involving whole numbers and fractions. representations to solve multiplication word problems involving whole numbers and fractions, Apply knowledge of the Associative Property of Multiplication with knowledge of unit fractions to accurately compute products of whole numbers and fractions, Use logical reasoning and connections among representations to justify solutions, reasonableness of solutions, and solution paths. A fraction a/b is a multiple of the unit fraction 1/b, (e.g.., a/b = a x 1/b), Multiplication may be viewed as putting together equal-sized groups, Mathematical problems (multiplication of whole numbers and fractions) can be solved using a variety