SAMPLE Nursing Entrance Exam Prep

‭Chapter 3: Math – Part 1‬ ‭3.1 Order of Operations‬

‭Mathematical‬ ‭operations‬ ‭must‬ ‭be‬ ‭performed‬ ‭in‬ ‭the‬ ‭correct‬ ‭order‬ ‭when‬ ‭you‬ ‭are‬ ‭performing‬ ‭calculations‬ ‭with‬ ‭numbers.‬ ‭First,‬ ‭you‬ ‭must‬ ‭perform‬ ‭the‬ ‭operations‬ ‭in‬ ‭parenthesis.‬ ‭From‬ ‭there‬ ‭you‬ ‭would‬ ‭then‬ ‭simplify‬‭the‬‭exponents‬‭and‬‭then‬‭complete‬‭any‬ ‭multiplication or division from left to right. Finally, addition or subtraction is completed.‬ ‭●‬ ‭Parenthesis – (anything in here first)‬ ‭●‬ ‭Exponents – Then %* or‬ ‭- a square root is also a‬‭type of exponent‬ ‭●‬ ‭Multiplication and Division – next × or ÷‬ ‭●‬ ‭Addition and Subtraction – finally + or – or ±‬ ‭Use the mnemonic device PEMDAS (Please Excuse My Dear Aunt Sally) to help you to‬ ‭remember the order of operations.‬ ‭Example‬ ‭Simplify the following expression:‬ ‭5 + 5 × 5 − 5 ÷ 5 =‬ ‭a.‬ ‭9‬ ‭b.‬ ‭29‬ ‭Example‬ ‭Simplify the following expression:‬ ‭(2 + 2) × 2‬ ‭2‬ ‭=‬ ‭a.‬ ‭10‬

‭b.‬ ‭4‬ ‭c.‬ ‭8‬ ‭d.‬ ‭16‬

‭c.‬ ‭5‬ ‭d.‬ ‭0‬

‭The correct answer is B. To simplify this‬ ‭expression, go through the order of‬ ‭operations.‬

‭The correct answer is D. To simplify‬ ‭this expression, go through the‬ ‭order of operations.‬

‭5 + 25 − 5 ÷ 5 =‬ ‭5 + 25 − 1 =‬

‭4 × 2‬ ‭2‬ ‭=‬

‭5 + 24 = 29‬

‭4 × 4 = 16‬

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