cc3 checkpoint 2 practice

Front

What does PEMDAS mean?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). It is the order of operations used to solve mathematical expressions.

Front

Solve when x = 3: 2 + 4x

Back

14

Front

What is the first step in solving an expression using PEMDAS?

Back

Solve inside the parentheses first.

Front

What do exponents represent in mathematics?

Back

Exponents indicate how many times a number (the base) is multiplied by itself.

Front

What is the result of 5 + 3 × 2 using PEMDAS?

Back

11 (First multiply 3 × 2 = 6, then add 5 + 6 = 11).

Front

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

Back

x = 4 (Subtract 3 from both sides, then divide by 2).

Front

What does the term 'variable' mean in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation or expression.

Front

What is the solution to the equation 3(x + 2) = 15?

Back

x = 3 (First divide both sides by 3, then subtract 2 from both sides).

Front

What is the purpose of using parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.

Front

What is the result of 10 - 2 + 4 using PEMDAS?

Back

12 (Perform subtraction and addition from left to right: 10 - 2 = 8, then 8 + 4 = 12).