Order of OperationsATI TEAS 7 cheat sheet

PEMDAS, one step at a time

13 key facts 3 practice questions Reviewed Oct 2026

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The Order

Parentheses — innermost brackets first
Exponents and roots next
Multiply and Divide left to right, as they appear
Add and Subtract left to right, last

The Trap

× and ÷ have equal rank — go left to right, not × before ÷
+ and − have equal rank — same rule
8 ÷ 4 × 2 = 4, not 1
A fraction bar groups the whole top and the whole bottom

Worked

3 + 4 × 2² → exponent: 3 + 4 × 4
→ multiply: 3 + 16
→ add: 19

On Test Day

Rewrite each step on its own line — most errors are skipped steps
Negative signs belong to the number; −3² = −9 but (−3)² = 9

Key takeaway

PEMDAS, one step at a time

Before you read

Test yourself first: 3 questions

Question 1 of 3

Using order of operations, evaluate 6 + 2 × 3.

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