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Math Vocab 4th grade
3rd Nine Weeks Math Vocabulary
Term | Definition |
---|---|
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 |