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GMAT Quantitative > The Basics > Flashcards

The Basics Flashcards

1
Q

PEMDAS

A

Parentheses
Exponents
Multiplication/Division
Addition/Subtraction

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2
Q

Top/Bottom Number in Fraction

A

Numerator/Denominator

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3
Q

Mixed number

A

Integer & a fraction (2 1/2)

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4
Q

Improper Fraction

A

Numerator is larger than denominator (5/2)

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5
Q

Add/Subtract with different denominators (Bowtie Method)

A

a/b +/- c/d = (da + bc) / bd & (da-bc)/bd

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6
Q

LCD Method

A

Use when all numbers in the denominators are factors or multiples of one another

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7
Q

Multiply fractions

A

Multiply across numerators/denominators

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8
Q

What do you do before multiplying fractions?

A

Reduce

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9
Q

What can you never do with denominators that you can do with numerators?

A

Split them

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10
Q

Terminating/Non-terminating decimals

A

Decimals that end/do not end

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11
Q

non-terminating & non-terminating, non-repeating decimals

A

1/3 vs. pi

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12
Q

examples of terminating decimal-producing and non-terminating decimal producing denominators

A

T: 2,5,8,10
NT: 3,6,7

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13
Q

Terminating Decimal X Terminating Decimal

A

Terminating Decimal

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14
Q

Terminating Decimal X Non-Terminating Decimal

A

Non-Terminating Decimal

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15
Q

Non-Terminating Decimal X Non-Terminating Decimal

A

Non-Terminating Decimal

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16
Q

Know fractions 1/2 through 1/8, corresponding decimal, and corresponding percentage

A

ex: 1/8 = .125 = 12.5%

17
Q

Simple vs. Compound Interest

A

Simple: (1 + percentage) x amount
Compound: amount x (1 + percentage for the period)^periods
*Compound: interest earns interest

18
Q

Gross Profit

A

= selling price or revenues - cost or expenses

19
Q

To divide fractions,

A

multiply by the reciprocal

GMAT Quantitative (3 decks)

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