Evaluating Expressions

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. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Solve: 18 - 8 ÷ 2

Back

14

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by performing the operations in the correct order.

Front

Solve: (18 ÷ 2) × 3 – 17

Back

10

Front

What is a mathematical expression?

Back

A mathematical expression is a combination of numbers, variables, and operators (like +, -, ×, ÷) that represents a value.

Front

Solve: 18 + (6 – 2) × 2

Back

26

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and operations without an equality sign, while an equation states that two expressions are equal.

Front

Solve: (7 + 41) ÷ 2 – 15

Back

9

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a number across a sum.

Front

Solve: (2×8) - 9 + 7

Back

14