area 
plane surface, as of the floor of a room; open space in a building; the enclosed space; extent; scope; range
bar graph 
a chart with bars whose lengths are proportional to quantities
decimal 
numbered or proceeding by tens; based on ten; a proper fraction whose denominator is a power of 10
denominator 
the divisor of a fraction
distributive property 
a special way in which multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses
fifths 
one of five equal parts of a whole
hundredths 
one of a hundred equal parts of a whole; called also percent
line graph 
a graph in which a series of connected straight lines connect points, each of which represents the value of a particular variable
median 
the value below which 50% of the cases fall
mode 
prevailing style; manner; way of doing something; fashion or style
numerator 
the dividend of a fraction
parallel 
make or place something to another's side; of or relating to multiple operations at same time; not intersecting
perimeter 
outer boundary length; closed curve bounding a plane area
perpendicular 
vertical; upright; intersecting at or forming right angles; extremely steep
proportion 
percentage; quotient obtained when a part is divided by the whole; part considered in relation to the whole
quadrant 
a quarter of the circumference of a circle; any of the four areas into which a plane is divided by two orthogonal coordinate axes
range 
limits within which something can be effective; variety of different things or activities
rational number 
an integer or a fraction
reflection 
image of something as reflected by mirror; remark expressing careful consideration
rotation 
revolution; act of rotating as if on an axis
tenths 
one of ten equal parts of a whole
transformation 
change in form , appearance, nature, disposition, condition, or the like
translation 
transformation in which the origin of the coordinate system is moved to another position but the direction of each axis remains the same
twelfths 
one of twelve equal parts of a whole