Array an orderly arrangement in rows and columns used in multiplication and division to show how multiplication can be shown as repeated addition and division can be shown as fair shares. *Associative Property of Addition When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4

Vesc mosfetThe graphic below illustrates how to break two-digit multiplication into manageable chunks: Show students how the bottom number in the problem can be decomposed into tens and ones. For example, in the problem below, 43 x 28 = 43 x (20 + 8). Using the distributive property, we also know that this equals (43 x 20) + (43 x 8).

methods. For example, students may use the distributive property as a strategy for using products they know to solve products that they don’t know. For example, if students are asked to find the product of 7 x 8, they might decompose 7 into 5 and 2 and then multiply 5 x 8 and 2 x 8 to arrive at 40 + 16 or 56.