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Math Vocab 4th grade

3rd Nine Weeks Math Vocabulary

TermDefinition
Line Straight, never curvy. It never ends in both directions. We use arrows on the ends to show they go on and on. Thin, not thick.
Point a period, or a dot. Points are geometric objects that show a location.
Line segment a line with two definite endpoints, they have a beginning and an end.
Ray a part of a line, they have one fixed endpoint and the other extends in the other direction without an end.
Angle the amount of turn between two rays that share a common endpoint. This endpoint is called a vertex.
Parallel lines lines that never cross. They remind us of a set of railroad tracks.
Perpendicular Lines 2 lines that intersect and form a right angle at that intersection.
Intersecting Lines lines that cross at exactly one point, but do not form a right angel when they cross.
Quotient the answer to a division problem.
Dividend the number being divided (in the box).
Divisor the number dividing the dividend (outside the box).
Product the answer to a multiplication problem
Prime Number a number having only two factors
Composite number a number having only two factors
Numerator the top number of a fraction which tells you how many parts in a whole are being used
Mixed Number a whole number and a fraction together
Equivalent fractions different fractions that name the same amount
Denominator the bottom number of a fraction that tells you how many parts are in the whole
Fraction a number that names part of a whole
Created by: amberbrouillard