| A | B |
|---|
| absolute value | the distance a number is from zero on the number line |
| additive identity property | a + 0 = a |
| irrational numbers | numbers that cannot be expressed as a/b, where a and b are integers and b does not equal 0 |
| algebraic expression | a combination of variables, numbers, and at least one operation |
| algebraic fraction | fraction with variables in the numerator and/or denominator |
| associative property of addition | (a + b) + c = a + (b + c) |
| associative property of multiplication | (ab)c = a(bc) |
| closure property of addition | for all rational numbers x and y, x + y is a rational number |
| closure property of multiplication | for all rational numbers x and y, xy is a rational number |
| commutative property of addition | a + b = b + a |
| commutative property of multiplication | ab = ba |
| equation | a mathematical sentence that contains an equal sign |
| evaluate | to find the value of an expression by replacing variables with numerals |
| identity property of addition | a + 0 = a |
| identity property of multiplication | a(0) = 0 |
| distributive property | a(b + c) = ab + ac |
| inverse property of addition | a + (-a) = 0 |
| monomial | an expression that is either a constant, a variable, or the product of numbers and variables |
| multiplicative inverse | reciprocal |
| open sentence | a sentence containing at least one variable; is neither true nor false |
| grouping symbols | parentheses, brackets, braces |
| pi | the ratio of a circle's circumference to its diameter |
| rational numbers | numbers which can be written a/b, where a and b are integers and b does not equal 0 |
| solution | the number that fits in place of the variable to make a true sentence |
| statistics | the study of collecting, analyzing, and presenting data |
| variable | a letter that stands for a number |
| x-axis | the horizontal line of the ttwo perpendicular lines in a coordinate plane |
| y-axis | the vertical line of the two perpendicular lines in a coordinate plane |
| sum | the answer to an addition problem |
| difference | the answer to a subtraction problem |
| product | the answer to a multiplication problem |
| quotient | the answer to a division problem |
