Question

give two examples that show how using parentheses can change the order in which operations are performed in an expression?

Answer 1

ProblemSimplify 3 + 5 • 2.   3 + 5 • 2  Order of operations tells you to perform multiplication before addition.   3 + 10 Then add. Answer     3 + 5 • 2 = 13

 

 

 

ExampleProblemSimplify 20 – 16 ÷ 4.   20 – 16 ÷ 4  Order of operations tells you to perform division before subtraction.   20 – 416Then subtract. Answer     20 – 16 ÷ 4 = 16