- Co-ordinate grid: Use to graph and name the location of points in a plane
- Compatible Numbers: Numbers that are easy to compute mentally
- Composite Number: A whole number with more than 2 factors
- Congruent: figures that are the same shape and same size
- Denominator: The number below the fraction bar.
- Difference: The answer to a subtraction problem
- Digit: The Arabic numerals used to write numbers 0 - 9
- Dividend: The number to be divided
- Divisible: A number is divisible by another number if there is no remainder after dividing.
- Divisor: The number used to divide another number.
- Equation: A number sentence with an equal sign.
- Estimate: An approximate rather than an exact number
- Expanded form: A way to write a number that shows the place vlaue of each digit.
- Factors: The numbers that are multiplied to get a product.
- Fraction: A symbol used to name a part of a whole, a part of a set, a location on a number line or a division of whole numbers
- Improper fraction: A fraction whose numerator is greater than or equal to it's denominator.
- Mean: The average of a set of numbers
- Median: The middle number in an ordered set of data
- Mixed number: A number that has a whole number part and a fractional part
- Mode: The data value that occurs most often in a set of data
- Numerator: The number above the fraction bar
- Ordered Pair: The two numbers used to locate a point on a line, on a surface, or in space
- Origin: The point at which the x and y axis intersect.
- Period: A group of 3 digits in a number. Periods are separated by a comma and start from the right of a number.
- Prime Number: A whole number with only 2 factors, 1 and itself
- Product: The answer to a multiplication problem
- Quotient: The answer to a division problem
- Range: The difference between the largest value and the smallest value in a data list
- Reflection: a change in a figure that produces a mirror image of the figure
- Rotation: a change in a figure that rotates it around a point
- Rounding: A process that tells which multiple of 10, 100, 100, etc. A number is closest to
- Standard Form: A number written in digits using commas to separate groups of 3 digits
- Sum: The answer to an addition problem
- Transformation: the flipping, sliding, or turning or a plane figure
- Translation: a change in a figure that moves it up, down or over
- Variable: A letter such as "n" that stands for a number in an equation.
- Word form: A number written in words using place value
- X axis: The horizontal line on the bottom of a Quadrant 1 graph
- Y axis: The vertical line on the bottom of a Quadrant 1 graph