7th grade Math Review

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius.

Front

What does the inequality x ≥ -2 mean on a number line?

Back

It means x can be -2 or any number greater than -2.

Front

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

Back

Add all the numbers together and divide by the total count of numbers.

Front

Solve for x: 3x - 7 = 32

Back

x = 13.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average, median is the middle value, and mode is the most frequently occurring value.

Front

What is the range of a set of numbers?

Back

Range = highest value - lowest value.

Front

How do you solve the equation 2x + 5 = 15?

Back

x = 5.

Front

What does the term 'complementary angles' mean?

Back

Two angles that add up to 90 degrees.

Front

What is the Pythagorean theorem?

Back

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