Pre-Algebra introduces foundational concepts in mathematics, including integers, fractions, and basic equations, essential for higher-level math courses.
A ratio shows how two numbers compare. It tells us how much of one thing there is compared to another.
A proportion says that two ratios are equal. It's a way to solve problems where things change at the same rate.
If \( \frac{a}{b} = \frac{c}{d} \), then \( a \times d = b \times c \).
Recipes, maps, and models all use ratios so things stay in balance!
Artists use proportions to draw realistic faces and bodies.
If a recipe calls for 2 cups of flour and 3 cups of sugar, the ratio is 2:3.
If 5 pencils cost $2.50, 10 pencils cost $5.00 (the proportion stays the same).
Ratios compare two numbers; proportions show that two ratios are equal.