PARCC 8th Grade Math Items

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

Define a rational number.

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. (a² + b² = c²)

Front

How do you calculate the mean of a set of numbers?

Back

Mean = (Sum of all values) / (Number of values)

Front

What is the difference between the median and the mode?

Back

The median is the middle value in a data set when arranged in order, while the mode is the value that appears most frequently.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

Define an integer.

Back

An integer is a whole number that can be positive, negative, or zero, but not a fraction or decimal.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac.

Front

How do you find the slope of a line given two points?

Back

Slope (m) = (y2 - y1) / (x2 - x1) for points (x1, y1) and (x2, y2).

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio.