Expanded Form - 600 + 30 + 9 = 639 扩展式, Numerator - The top number in a fraction  分子, Denominator - The bottom number in a fraction 分母, fractions - A fraction is any number that can be written in the form A/B where A & B are integers and B is not zero. Ex: 3/ 4 分数, Polygon - A closed shape with 3 or more sides 多边形, Hexagon - A six sided figure 六边形, Octagon - An eight sided figure  八边形, Quadrilateral - A four sided figure 四边形, Parallelogram - A four sided figure with two different pairs of parallel lines that are of equal length 平行四边形 , Trapezoid - A four sided shape where at least one pair of lines are parallel to each other 梯形 , Rhombus - A four sided figure where all sides are the same length 菱形  , Value - The amount that the digit represents - In the number 425 the value of the digit "2" is "20" 值 , Translation - A movement, up, down, left, or right of a shape, but no other change 变形, Horizontal - A line that goes from left to right 水平/横着  , Vertical - A line that goes up and down 竖直/竖着, Perimeter - The distance around an object 周长, Area - The space taken up by an object 面积, Quotient - The answer to a Division problem 商, Divisor - The number that you are dividing by 除数 , Remainder - The amount left over in a division problem 余数, Product - The answer to a multiplication problem 积, Sum - The answer to an addition problem  和, Operation - The symbol that tells you to add, subtract, multiply, or divide 运算 , Reflection - When the object is flipped  翻折, Symmetry - The object can be split into two equal parts with a line down the middle 对称, Rotation - When an object rotates around one point 旋转  , Right angle - An angle equal to 90 degrees 直角, Obtuse angle - An angle more than 90 degrees 钝角, Acute angle - An angle less than 90 degrees 锐角, Intersect - Two lines that pass through each other 相交, Parallel line - Straight lines that are always the same distance apart from each other 平行, Perpendicular lines - Two lines that when intersect, form a 90 degree angle 垂直, yards - A unit of measurement equal to 3 feet, ray - A straight line extending from a point. A part of a line, with one endpoint that continues without end in one direction., sphere - A straight line extending from a point. A part of a line, with one endpoint, that continues without end in one direction., rectangular prism -  A solid shape that has: 6 faces (4 rectangles & 2 squares), 8 vertices (corners), and 12 equal edges., square pyramid -  A pyramid having a square base. 四角锥, pentagon -  5 sided figure. 五边形, meters -  Metric unit of length measurement, 1m=100 cm. 米, feet -  A unit of measurement equal to 12 inches. 英尺, faces -  A flat surf ace that forms part of the boundary of a solid object. 面, estimate - Find an approximate value for an unknown quantity. 估计, edges -  The intersection of faces in a three dimensional figure. 边, inches -  the basic measure of length; 12 inches equal 1 foot. 英寸, kilometers - a unit of length used in measuring distances in the metric system, can also be written KM or km. 千米, cube -  A measure of how much surface an object has. multiply the LENGTH by the WIDTH. 立方体, cylinder -  A solid figure with two equal and parallel circular bases. 圆柱体, centimeters - A metric unit for measuring length. 1 centimeter = 10 millimeters. 厘米, cone - A three dimensional shape with a circular base and a vertex opposite the base. 圆锥体, difference - Answer to a subtraction problem 差, angle - A figure created by two distinct rays that share a common endpoint (also known as a vertex)., congruent - Having the same size and shape.,

Math MCA Vocabulary 3rd grade

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