Math EOG Prep

Front

What is a fraction?

Back

A fraction represents a part of a whole. It is written as two numbers separated by a slash, like 1/2, where the top number (numerator) shows how many parts we have, and the bottom number (denominator) shows how many equal parts the whole is divided into.

Front

What does it mean for two fractions to be equivalent?

Back

Two fractions are equivalent if they represent the same part of a whole, even if they have different numerators and denominators. For example, 1/2 and 2/4 are equivalent fractions.

Front

How do you find the shaded area of a figure represented by a fraction?

Back

To find the shaded area, you need to know the total area of the figure and multiply it by the fraction that represents the shaded part. For example, if the total area is 8 square units and the fraction is 1/4, the shaded area is 8 * 1/4 = 2 square units.

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides and four angles. Examples include squares, rectangles, and trapezoids.

Front

How do you add fractions with different denominators?

Back

To add fractions with different denominators, first find a common denominator, convert the fractions to equivalent fractions with that denominator, and then add the numerators. For example, to add 1/4 and 1/6, the common denominator is 12, so 1/4 becomes 3/12 and 1/6 becomes 2/12. Then, 3/12 + 2/12 = 5/12.

Front

What is the formula for finding the perimeter of a rectangle?

Back

The perimeter of a rectangle is found by adding the lengths of all four sides. The formula is P = 2(length + width).

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape (like how much carpet you need), while perimeter measures the distance around the shape (like how much fence you need).

Front

How do you solve for a variable in an equation?

Back

To solve for a variable, you need to isolate it on one side of the equation. This often involves performing the same operation on both sides of the equation to keep it balanced.

Front

What is a true equation?

Back

Front

How do you estimate the sum of two numbers?

Back

To estimate the sum, round each number to the nearest ten or hundred and then add those rounded numbers. For example, to estimate 265 + 478, round to 270 + 480 = 750.