Across
- 5. A fixed numerical value that does not change.
- 8. A property that lets you multiply a sum by a number: a(b + c) = ab + ac.
- 12. A mathematical phrase made of numbers, variables, and operations (no equals or inequality sign), for example 4x + 7.
- 13. The number multiplied by a variable in a term (for 3x, 3 is the coefficient).
- 14. A single number, variable, or product of numbers and variables separated by + or − signs.
Down
- 1. A mathematical statement that two expressions are equal, shown with an equals sign, for example 2x + 5 = 13.
- 2. To find the numerical value of an expression by substituting specific values for its variables.
- 3. Pairs of operations that undo each other (addition ↔ subtraction, multiplication ↔ division) used to isolate variables when solving equations or inequalities.
- 4. Terms that have the same variable(s) raised to the same power(s), which can be combined by adding or subtracting their coefficients.
- 6. To rewrite an expression in a simpler or more compact form by combining like terms and performing arithmetic.
- 7. A symbol (often a letter) that stands for an unknown or changeable number in an expression, equation, or inequality.
- 9. To find the value(s) of the variable(s) that make an equation or inequality true.
- 10. A mathematical statement that compares two expressions using symbols such as <, >, \le, or \ge to show one side is less than, greater than, less than or equal to, or greater than or equal to the other.
- 11. The set of values that satisfy an equation or inequality (make it true). For inequalities, solutions often form a range of values.