Understanding Numbers

Numbers are the foundation of all math! You'll work with whole numbers, decimals, fractions, and negatives. Knowing how to read and compare numbers helps you in everyday life, like understanding prices and measurements.

Arithmetic Operations

Addition, subtraction, multiplication, and division are the four basic operations you’ll use. These let you solve problems from splitting a pizza to calculating your total bill at the store.

• Addition (+) combines values.
• Subtraction (-) finds the difference.
• Multiplication (×) is repeated addition.
• Division (÷) splits things into equal groups.

Real-World Connections

Being comfortable with numbers and operations means you can manage money, keep track of time, and understand statistics in sports or the news!

Tips

• Always line up decimal points when adding or subtracting decimals.
• To compare fractions, find a common denominator.