Evaluating Expressions

Front

Evaluate when a = 15: 2(a - 5) + 2

Back

22

Front

Evaluate 2(x-5)+8 for x=1

Back

0

Front

Evaluate 4y if y = 3

Back

12

Front

Evaluate 5m + 7 if m = 5

Back

32

Front

Evaluate 8 ÷ 8 + 6 × 2

Back

13

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - often abbreviated as PEMDAS.

Front

Evaluate 3(x + 4) when x = 2

Back

18

Front

Evaluate 7 - 2(3 + 1)

Back

-1