Understanding Numbers

Numbers are the building blocks of mathematics. They come in many types, like whole numbers, integers, fractions, decimals, and percentages. Knowing how to work with these is essential for teaching math and solving everyday problems.

Arithmetic Operations

The four main operations are addition, subtraction, multiplication, and division. These help us combine and compare numbers in various ways.

Order of Operations

To solve expressions correctly, remember PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Real-World Uses

Numbers and operations are everywhere—from splitting a bill at a restaurant to measuring ingredients for a recipe.

Quick Tips

• Always double-check your calculations.
• Use estimation to check if your answer makes sense.