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4th Grade Math Vocabulary

AddendA number that is added in an addition problem.
AngleA corner formed where two lines meet.
AreaThe number of squares of a certain size that it takes to cover a given surface.
AverageThe number that would be in each group if the items were rearranged so that each group had the same number of items.
Bar GraphA graph that uses bars to show the information.
CircumferenceThe distance around a circle; the curved line that bounds a circle.
Common DenominatorTwo fractions have common denominators if the denominators are equal.
Decimal NumberA number that uses digits and a decimal point.
Decimal PointA dot used to separate the whole part of a decimal number from the fractional part of the decimal number.
DenominatorThe bottom number of a fraction. This number tells the total number of parts in the whole.
DiameterThe distance across a circle through the center.
DifferenceThe answer to a subtraction problem.
DigitAny of the following symbols: 0,1,2,3,4,5,6,7,8,9.
Division BarThe bar that separates the numerator of a fraction from the denominator of the fraction. Also called the fraction bar.
EqualHas the same value as.
Equivalent FractionTwo or more fractions that have the same value.
EstimateTo determine mentally an approximate answer to a problem.
Expanded FormA way of representing a number which uses the sum of the products of each digit and the place value of each digit.
FactorAny number that is multiplied.
FractionA number used to designate part of a whole.
Geometric SolidA geometric shape that takes up space.
GraphA picture that shows number information about a certain topic.
Greater thanHas a larger value than.
HexagonA six sided polygon.
Improper FractionsA fraction that is greater than or equal to 1.
Intersecting LinesLines that cross one another.
Less thanHas a smaller value than.
Line GraphA graph that displays information by lines that connect data points.
Line SegmentA part of a line.
Mixed NumberA whole number followed by a fraction.
MultipleA number found by multiplying a given number by a whole number greater than zero.
Number LineA line on which a number is associated with each evenly spaced mark.
NumeratorThe top number of a fraction. This number tells the number of parts being described.
OctagonAn eight sided polygon.
Parallel linesLines that stay the same distance apart.
PentagonA five sided polygon.
PerimeterThe distance around a polygon.
Perpendicular LinesIntersecting lines which form right angles.
PictographA graph that uses pictures of items to show information.
Pie GraphA graph that represents information using a circle divided into sections that look like slices of pie.
PolygonStraight-sided closed plane figure.
ProbabilityThe likelihood that something will happen.
ProductThe result of multiplying.
QuadrilateralA four sided polygon.
QuotientThe answer to a division problem.
RadiusThe distance from the center of a circle to the edge of the circle.
Reduced FractionAn equivalent fraction written with smaller numbers.
Right AngleA square corner.
Roman NumeralsLetters used by the ancient Romans to write numbers.
ScaleA type of number line often used for measuring.
SegmentA part of a line.
SequenceAn orderly arrangement of numbers determined by following a certain rule.
Square UnitA square with sides of designated length.
SumThe answer to an addition problem.
TableA way of presenting information in rows and columns.
Tally marksShort, straight marks used for keeping track of the number of times that something occurs.
TriangleA three sided polygon.
Whole NumbersAny of the numbers in this sequence: 0,1,2,3,4,5,....

Ms. Wilcox

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