Pre-Algebra

Pre-Algebra introduces foundational concepts in mathematics, including integers, fractions, and basic equations, essential for higher-level math courses.

Understanding IntegersFractions and DecimalsOrder of Operations
Solving Basic EquationsFactors and MultiplesRatios and Proportions
Using Math in ShoppingCooking and MeasuringPlanning and Time Management
Check Your WorkBreak Down Big ProblemsUse Visuals and Drawings
Understanding Intege...Fractions and Decima...Order of OperationsSolving Basic Equati...Factors and Multiple...Ratios and Proportio...Using Math in Shoppi...Cooking and Measurin...Planning and Time Ma...Check Your WorkBreak Down Big Probl...Use Visuals and Draw...
Practical Applications

Using Math in Shopping

Smart Shopping Skills

Pre-Algebra helps you make better choices when you shop! Understanding prices, discounts, and change all use math.

Everyday Uses

  • Figuring out sale prices with percentages and decimals.
  • Adding up totals and calculating change using integers and decimals.
  • Comparing package sizes using ratios.

Why It Matters

Being good with numbers can help you save money and avoid mistakes at the store.

Examples

  • You have $20 and buy items that cost $7.50 and $5.25. You add the prices and subtract from $20 to find your change.

  • A shirt is 25% off. If it costs $16, you multiply \( 16 \times 0.25 = 4 \), then subtract $4 from $16 to find the sale price.

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Cooking and Measuring