8th grade Pre-Algebra FSA Review

Front

What is 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

Which of the following is not a rational number? A. -3 B. 2.7 C. √4 D. √5

Back

D. √5 is not a rational number because it cannot be expressed as a fraction of two integers.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

How do you find the largest exterior angle of a triangle?

Back

The largest exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Front

What is the formula for calculating the slope of a line?

Back

The slope (m) of a line is calculated using the formula m = (y2 - y1) / (x2 - x1).

Front

Find the slope of the line given two points (2, 3) and (6, 1).

Back

The slope is -1/2.

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that 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

If one side of a right triangle is 60 in and the other is 80 in, what is the length of the hypotenuse?

Back

The hypotenuse is 100 in.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

Front

How is the number 31,830,000 written in scientific notation?

Back

31,830,000 is written as 3.183 x 10^7 in scientific notation.