Write and Evaluate Algebraic Expressions

Front

What does PEMDAS stand for?

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

Evaluate the expression 5x + 2 when x = 3.

Back

5(3) + 2 = 15 + 2 = 17.

Front

What is the algebraic expression for '7 more than a number'?

Back

n + 7.

Front

In the expression 4(3y + 2), what do you solve first?

Back

You solve the expression inside the parentheses first, which is 3y + 2.

Front

Identify the constant in the expression 8x + 5.

Back

The constant is 5.

Front

What is the first step in solving the expression 2(5 + 3) - 4?

Back

First, solve the expression inside the parentheses: 5 + 3 = 8.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given numbers.

Front

Write the algebraic expression for 'twice a number decreased by 4'.

Back

2n - 4.

Front

What is the result of evaluating 3a - 7 when a = 4?

Back

3(4) - 7 = 12 - 7 = 5.

Front

What is the algebraic expression for 'the sum of a number and 12'?

Back

n + 12.