SAT Math Multiple Choice Practice Question 177: Answer and Explanation

Next steps

Question: 177

1. Evaluate 3(4 - 2)2 -- 2.

A. -2
B. 10
C. 20
D. 34
E. 98

Correct Answer: B

Explanation:

B. Use the acronym PEMDAS (see Chapter 12 if you don't remember what it means) to know that you need to deal with the parentheses first, and then the exponent. So, 3(4 - 2)2 - 2 = 3(2)2 - 2 = 3 × 4 - 2. Again, using PEMDAS, you need to do the multiplication before the -subtraction: 3 × 4 - 2 = 12 - 2 = 10.

Previous       Next