8th Grade Math STAAR Review - Texas

Front

What is Surface Area?

Back

Surface Area is the total area that the surface of a three-dimensional object occupies. It is measured in square units.

Front

How do you calculate the Surface Area of a rectangular prism?

Back

Surface Area = 2(lw + lh + wh), where l = length, w = width, h = height.

Front

What is the solution to a system of equations?

Back

The solution to a system of equations is the point(s) where the equations intersect, representing the values of the variables that satisfy all equations.

Front

What is the Pythagorean Theorem?

Back

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

Front

How do you find the distance between two points in a coordinate plane?

Back

Distance = √((x2 - x1)² + (y2 - y1)²), where (x1, y1) and (x2, y2) are the coordinates of the points.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10.

Front

How do you convert a number from scientific notation to standard form?

Back

To convert, move the decimal point to the right for positive exponents and to the left for negative exponents.

Front

What is a rectangular prism?

Back

A rectangular prism is a three-dimensional shape with six faces, all of which are rectangles.

Front

What is the formula for the volume of a rectangular prism?

Back

Volume = length × width × height.

Front

What is the difference between perimeter and area?

Back

Perimeter is the total distance around a shape, while area is the amount of space inside a shape.