Basic Concepts
In a nutshell: Learn the different types of numbers and how to use basic operations with them.
## Understanding Numbers
Math starts with numbers! You’ll work with different types, like whole numbers, integers, fractions, and decimals. Each type has its own rules and quirks, but they all help you solve everyday problems.
## Arithmetic Operations
The four basic operations—addition, subtraction, multiplication, and division—are the building blocks of math. Mastering these means you can handle just about any number you meet!
- **Addition** (\(+\)): Combining values.
- **Subtraction** (\(-\)): Finding the difference.
- **Multiplication** (\(\times\)): Groups of numbers.
- **Division** (\(\div\)): Sharing evenly.
## Tips for Success
- Always line up decimals when adding or subtracting decimals.
- Remember the order of operations: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction (PEMDAS).
## Why It Matters
Numbers and operations are everywhere—shopping, cooking, budgeting, and more. They help you make sense of the world and make smart choices.
Examples
- Adding fractions to double a recipe for cookies.
- Subtracting prices to find out how much change you’ll get at the store.
Key terms
- Integer
- A whole number that can be positive, negative, or zero.
- Fraction
- A number that represents part of a whole.
- Decimal
- A number with a point (.) that shows values less than one.