| A | B |
| Whole number | A number to count with, tells how many. |
| Negative integer | A whole number less than zero |
| Fraction | A number that names part of a whole |
| Decimal | A number that uses a decimal point and place value to show mixed numbers and fractions |
| Mixed number | A number that is greater than one that uses a whole number and a fraction |
| Addition | Finding the sum of two integers |
| Division | Finding the quotient of a dividend and a divisor |
| Subtraction | Finding the difference between two numbers |
| Multiplication | Finding the product of two numbers |
| Polygon | A plain figure with straight sides and corners |
| Range | Difference between the greatest and least number in a set |
| Mean | Number the average |
| Median | the middle number in a list arranged in order |
| Mode | the number that appears most often in a set |
| Congruent figures | figures that have the same shape and size |
| transformation | a change in a shape by sliding, flipping, or turning. |
| Line of symmetry | a line that divides a shape into two halves that are exactly alike. |
| Slide | moving a shape to a new spot |
| flip | reversing a shape |
| turn | rotating a shape to face a new direction |
| coordinates | numbers used to tell where to plot points, or spots,on a grid, map, or table |
| angle | shape formed when two lines meet |
| vertex | the point where two lines cross |
| Triangle | 2-dimensional shape with three straight sides and 3 angles |
| rectangle | a 2-dimensional shape with 4 straight sides and 4 angles |
| square | a 2 dimensional shape with 4 straight sides of equal legnth and four equal angles |
| circle | a 2 dimensional round shape |
| solid | a 3 dimensional shape the has length, width, and height |
| area | examinations of objects to the space insie a shape |
| perimeter | the total distance around the edge of a shape |