Testing solutions of equations

The  exercise appears under the 6th grade (U.S.) Math Mission. This exercise has students substitute to determine the reasonableness of solutions to equations.

Types of Problems
There is one type of problem in this exercise:


 * 1) Find the correct solution to the equation: This problem provides an equation and several possible solutions to the equation. The student is expected to select the correct answer from the multiple choice list.Tsoe1.png

Strategies
Knowledge of basic algebra and experience evaluating expressions are encouraged to ensure success on this exercise.
 * 1) The answer choices can be plugged into the expression to determine which answer is correct.
 * 2) The equation can also be solved for the unknown to determine what the correct solutions.

Real-life Applications

 * 1) An ability to check solutions and determine whether they are reasonable or not is a useful skill in many advanced mathematics courses, as well as in real-life applications.