GMAT Cheat Sheet

GMAT: Math Cheat Sheet Data Sufficiency (POE)

Quadrilateral

(x + y) 2 = x 2 + 2xy + y 2 (x - y) 2 = x

2

- 2xy + y 2

(x + y) (x - y) = x 2 - y 2

Parallelogram

Distance or Wage Rate

Time Pythagorean theorem (90/right angle) 0/4 = 0 4/0 = undefined

Number Properties

PEMDAS

a = 3, 5, 7

30-60-90 Angle = 1, 1.7, 2

b = 4, 12, 24 c = 5, 13, 25

Please [parentheses] Excuse [exponents] My [multiplication]

~ A line is 180 degrees angle

Dear [division]

~ Every triangle contains 180 degrees

Aunt [addition]

~ The longest side of a triangle is opposite the largest (visa versa)

Sally [subtraction] ~ A Prime Number can be divided evenly only by 1, or itself. Neither 0 nor 1 is prime ~ Prime factorization of 12 is 2*2*3 | 15 is 3*5

45-45-90 Right isosceles = 1, 1, 1.4

Data Sufficiency (POE) Evaluate Statement 1 Type Title Here

YES (Sufficient) [A]

YES (Sufficient) THEN [ A D ]

NO (Insufficient) THEN [ B C E]

Evaluate Statement 2

Evaluate Statement 2

NO (Insufficient) [D]

YES (Sufficient) [B]

NO (Insufficient) THEN [ C E ]

Evaluate Both Statements Together

YES (Sufficient) [C]

NO (Insufficient) [E]