During the year every time there is a math vocabulary word discussed we add it to our word wall. On every Wednesday we play a game or take a quiz on our word wall definitions. It is extremely important that your child knows his or her math vocabulary. Below are the word wall words we have posted in our room and the defintions (at mid year). If you would like you may download a copy to print by clicking on the "click here" icon.

< means less than

> means greater than

half: means to divide by 2

twice: means to multiply by 2

product: means to multiply

quotient: means to divide

sum: means to add

difference: means to subtract

tenths: the place right after the decimal point

multiples: another word for multiplication facts (2,4,6,8 etc)

factors: the numbers that you multiply together (2 x 4 =8)

numerator: top number of a fraction

denominator: bottom number of a fraction

equivalent: means equal to

prime: a number that has 1 set of factors

composite: a number that has more than 1 set of factors

standard form: a number written as a regular number

written form: a number written in words

expanded form: a number written by taking the value of each digit and adding it together

congruent: means same size and same shape

perpendicular lines: lines that cross to make a square corner or right angle

parallel lines: lines that never touch

intersecting lines: lines that cross at one point

right angle: an angle that measures exactly 90 degrees

obtuse angle: an angle that measures more than 90 degrees

acute angle: an angle that measures less than 90 degrees

line: a straight path in a plane with no end

ray: it has a beginning but no end

line segment: it has a beginning and an end

Plane: a flat surface with no end

Inch: about the length of the bendy part of your thumb

Foot: about the length from your elbow to your thumb

Yard: about the length of a baseball ball

Click the icon to view and print the complete list of math vocabulary words that each 5th grade math student should know by the end of their 5th grade year.