Expressions

4. A mathematical statement showing two expressions are equal, connected by an equal sign (e.g., 3x + 5 = 14)
6. Property, Grouping doesn't matter in addition or multiplication ((a + b) + c = a + (b + c))
9. The number multiplied by a variable in an expression (e.g., in 5x, the 5 is the coefficient)
11. of Operations The rules for which calculations to perform first (PEMDAS: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction)
12. Operations, Operations that undo each other (addition/subtraction, multiplication/division)
13. A letter or symbol that represents an unknown number or value
14. A value that doesn't change; a number on its own in an expression
15. A number that shows how many times the base is multiplied by itself (e.g., in 2³, the 3 is the exponent)

1. Expressions Two or more expressions that have the same value for all values of the variables
2. Property, Multiplying a sum by a number is the same as multiplying each addend by the number (a(b + c) = ab + ac)
3. The number being multiplied by itself in an exponential expression (e.g., in 2³, the 2 is the base)
5. Property, Adding 0 or multiplying by 1 doesn't change the value (a + 0 = a; a × 1 = a)
7. A mathematical phrase that contains numbers, variables, and operations but no equal sign (e.g., 3x + 5)
8. Property, Order doesn't matter in addition or multiplication (a + b = b + a; a × b = b × a)
10. Factorization Writing a number as a product of its prime factors (e.g., 12 = 2 × 2 × 3 or 2² × 3)