7th Grade Unit 2 Math Vocabulary List 1 1. 2. 3. 4. 7th Grade Unit 2 Math Vocabulary List 2 Term: A number, a variable, or a product of numbers and variables. Algebraic Expression: A mathematical phrase involving at least one variable and sometimes numbers and operation symbols. Coefficient: A number multiplied by a variable in an algebraic expression. 1. Equation: A mathematical sentence that contains an equal sign. Order of Operations: The rules to be followed when simplifying expressions 3. Linear Equation: An equation whose solution is a straight line. 5. 6. Variable: A letter or symbol used to represent a number. Like Terms: Terms in an algebraic expression that have the same variable raised to the same power. Only the coefficients are different. 7. Constant: A quantity or term that does not change its value. It does not have a variable. 8. Base (of a Power): The number or expression used as a factor for repeated multiplication. 9. Exponent: The number of times a number or expression (called base) is used as a factor of repeated multiplication. Also called the power. 10. Evaluate: To find the value of an expression by replacing each variable in an expression with numbers. 2. Inverse Operation: Pairs of operations that undo each other. 4. Solution: A number (or ordered pair of numbers, or set of numbers) that produces a true statement when substituted for the variable(s) in an equation or inequality. 5. Inequality: Any mathematical sentence that contains the symbols > (greater than), <(less than), <(less than or equal to), or > (greater than or equal to). 6. 7. 8. 9. 10. 7th Grade Unit 2 Math Vocabulary List 1 1. Term: A number, a variable, or a product of numbers and variables. 2. Algebraic Expression: A mathematical phrase involving at least one variable and sometimes numbers and operation symbols. 3. Coefficient: A number multiplied by a variable in an algebraic expression. 4. Order of Operations: The rules to be followed when simplifying expressions 5. Variable: A letter or symbol used to represent a number. 6. Like Terms: Terms in an algebraic expression that have the same variable raised to the same power. Only the coefficients are different. 7. Constant: A quantity or term that does not change its value. It does not have a variable. 8. Base (of a Power): The number or expression used as a factor for repeated multiplication. 9. Exponent: The number of times a number or expression (called base) is used as a factor of repeated multiplication. Also called the power. 10. Evaluate: To find the value of an expression by replacing each variable in an expression with numbers. Addition Words- and, increased, more, more than, plus, sum, total Subtraction Words- decreased, difference, less, less than, lower than, minus Multiplication Words- triple, half, product, times, double, twice Division Words- into, by, among, quotient, Factor: When two or more integers are multiplied, each integer is a factor of the product. "To factor" means to write the number or term as a product of its factors. 7th Grade Unit 2 Math Vocabulary List 2 1. Equation: A mathematical sentence that contains an equal sign. 2. Inverse Operation: Pairs of operations that undo each other. 3. Linear Equation: An equation whose solution is a straight line. 4. Solution: A number (or ordered pair of numbers, or set of numbers) that produces a true statement when substituted for the variable(s) in an equation or inequality. 5. Inequality: Any mathematical sentence that contains the symbols > (greater than), <(less than), <(less than or equal to), or > (greater than or equal to). 6. 7. 8. 9. 10. Addition Words- and, increased, more, more than, plus, sum, total Subtraction Words- decreased, difference, less, less than, lower than, minus Multiplication Words- triple, half, product, times, double, twice Division Words- into, by, among, quotient, Factor: When two or more integers are multiplied, each integer is a factor of the product. "To factor" means to write the number or term as a product of its factors. 7th Grade Unit 2 Math Vocabulary List 1 – Equations and Expressions 1. Term: A number, a variable, or a product of numbers and variables. 2. Algebraic Expression: A mathematical phrase involving at least one variable and sometimes numbers and operation symbols. An expression does not have an equal sign. 3. Coefficient: variable. A number multiplied by a variable in an algebraic expression. It normally precedes the 4. Order of Operations: The rules to be followed when simplifying expressions. PEMDAS 5. Variable: A letter or symbol used to represent a number. 6. Like Terms: Terms in an algebraic expression that have the same variable raised to the same power (exponent). Only the coefficients are different. 7. Constant: A quantity or term that does not change its value. It does not have a variable. 8. Base (of a Power): The number or expression used as a factor for repeated multiplication. 9. Exponent: The number of times a number or expression (called base) is used as a factor of repeated multiplication. An exponent can also be called the power. 10. Evaluate: numbers. To find the value of an expression by replacing each variable in an expression with