SSAT Upper Level: Quantitative

SSAT Upper Level

Basic Concepts

Algebraic Expressions and Equations

Introduction to Algebra

Algebra helps us find unknown values, like figuring out how many candies are in a jar if you know the total weight.

Expressions vs. Equations

  • Expression: A combination of numbers, variables, and operations (like \( 3x + 2 \))
  • Equation: Two expressions set equal to each other (like \( 3x + 2 = 8 \))

Simplifying Expressions

Combine like terms and use the order of operations (PEMDAS: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction) to simplify.

Solving Equations

The goal is to find the value of the variable that makes the equation true.

Real-World Applications

Algebra is useful for budgeting, planning trips, and even coding video games!

Examples

  • If \( x + 5 = 12 \), then \( x = 7 \).

  • Simplifying \( 2x + 3x \) to \( 5x \).

In a Nutshell

Algebra lets you use symbols to solve puzzles and find unknowns in everyday situations.