ACT Math Practice

Front

What is the algebraic expression for 'the sum of n and 9'?

Back

n + 9

Front

What is the sum of -7 and 5?

Back

-2

Front

If n = 8 and 16· 2⁻⁸ = 4, then what is m?

Back

-4

Front

What is the value of |-5| + |2|?

Back

7

Front

A circle has a circumference of 16π feet. What is the radius of the circle?

Back

8

Front

What is the definition of an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction.

Front

What is the process to solve for n in the equation 2n + 3 = 11?

Back

Subtract 3 from both sides to get 2n = 8, then divide by 2 to find n = 4.

Front

What is the definition of a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.