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OAA Math Terms
7th Grade math terms
| Term | Definition |
|---|---|
| acute | angle greater than 0 and less than 90 degrees |
| algorithm | steps used to solve a problem |
| associative properties | the answer to a problem will be the same regardless of how you group it. ex. a+b will give you the same answer as b+a |
| bivariate data | data that has two variable. |
| Box-and-whisker plot | pictorial representation of the median of data and the range of all data from highest to the lowest quartile. |
| common factors | a number that divides evenly into two or more expressions |
| common referent | something that is familiar that can be used to understand something that is less familiar. ex. A loaf of bread is about 12 inches long. |
| communitive property | numbers order in a math problem can be changed (14+2 will give you the same answer as 2+14) but the answer remains the same. |
| compatible numbers | a pair of numbers that are easy to work with mentally. Ex. 141 x 4 Could be estimated by 140 X 5 |
| congruent | same size and same shape |
| correlation (hint: relation) | the relationship between 2 sets of data |
| coefficient | A number or symbol multiplied in an algebraic term. ex. 5a - 5 is coeffient and a is the variable. |
| distributive property | Math property that states that multiplying a sum by a number is the same as multiplying each addend (the numbers being added) by the number and then adding the products. Ex a x (b + c) will get same answer as (a x b) + (a x c) |
| dividend | number that is divided by another 20/4 The 20 is being divided and called dividend.. The 4 is the number dividing and is called the divisor. The answer is called the QUOTIENT. |
| equation | a math sentence with an equal sign |
| divide | to evenly seperate an amount into equal groups. Ex. Mom buys Reese Cup and says give 1/2 to your brother. You divide it by giving 1 to brother and 1 for yourself. |
| equivalent | two numbers or expressions are equal Ex. 210 = 200+10 |
| expression | combining variable, number and symbols (but not including inequality and equality symbols) Ex. a+3b |
| irrational numbers | any number that can be written as a decimal, but not a fraction. Ex. Pi 3.14... |
| face | flat surface on a solid figure |
| function table | table that lists pairs of numbers that show a function. |
| mean | the average of a set of numbers add all numbers and then divide by the number of addends |
| mode | the number in a data set that occur MOST 2,3,2,2 the the mode is 2 |
| median | the middle number when data is arranged from least to greatest |
| natural numbers | the counting numbers |
| negative numbers | numbers less than zero and to the left of the zero on the number line. |
| perfect square | the product (answer of multiplication) of a number multiplied by itself. Ex. 16 is the perfect square of 4 because 4x4 |
| integers | positive numbers, their opposites and zero -3, -2, -1, 0, 1, 2, 3 |
| proportion | an equation that shows that two ratios are equal. Ex. 12/18 = 4/6 |
Created by:
cvacca
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