Associative property of multiplication

The  exercise appears under the Mission Name Here. This exercise practices changing the grouping of factors in multiplication problems and see how it affects the product.

Types of problems
There are two types of problems in this exercise:
 * 1) Complete the equations to solve ___ two different ways.: This problem asks the student to fill in the blanks to complete the multiplication problems in two different ways.
 * 2) Which expressions are equivalent to ___ ?: This problem has an expression and the students is asked to find which expression(s) are equivalent to it. There may be more than one answer to this problem.

Strategies
Basic knowledge of the associative property and multiplication is required for this exercise.
 * 1) The parentheses tell the user which two numbers to multiply first.

Real-life Applications

 * 1) Multiplication is needed and used by mechanics for repairing cars by multiplying when they overhaul the engine, measure the pistons or just to put in a new gearbox or engine.