8th Grade Math Review

Front

What is the result of -5 - (-3)?

Back

-2

Front

Simplify the expression: -x² + 2 - 1 + 6x² - 4x².

Back

x² + 1

Front

What is the value of x if x = 7?

Back

7

Front

In a triangle, if the angle measures are given, how do you find the value of x?

Back

Use the triangle angle sum property (sum of angles = 180°).

Front

Solve the equation: 0.5(x - 3) = 7.5.

Back

x = 18

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What does it mean to simplify an expression?

Back

To reduce it to its simplest form by combining like terms.

Front

What is the value of x in the equation 2x + 3 = 11?

Back

x = 4

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.