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# Combined STAAR

### Math STAAR Vocabulary Words - all 48

Prime factorization factors of a number that are all prime
Prime numbers numbers that only have one and itself as factors
Factors Numbers that divide into a whole number with no remainder
GCF greatest common factor
Prism A 3D solid with two congruent bases
Reflection mirror image of a figure
Rotation move around (like in “four square” game)
Translation slide (horizontally, vertically, or diagonally)
Line of Symmetry a line that divides a figure into two mirror images
Congruent shapes having the same size and same shape
Pyramid A 3D solid with a polygon as its base and triangular faces that meet at the top
Circumference the distance around a circle
Diameter the distance across the middle of the circle
Radius Half the diameter
Improper Fraction a fraction with a numerator larger than the denominator. Simplify!
Equation A number sentence using an equal sign
Acute angle angle that is less than a right angle (less than 90 degrees)
Obtuse angle angle that is more than a right angle (greater than 90 degrees)
Right angle square angle (equal to 90 degrees)
Perpendicular lines lines that cross and form a right angle
Parallel lines lines that do not cross each other, they stay the same distance apart
Whole numbers 0, 1, 2, 3, 4, 5........
Average The answer when numbers are added and then divided by the number of addends
Product answer to multiplication
Difference answer to subtraction
Quotient answer to division
Area the number of square units needed to cover a surface. Length x Width = formula for a rectangle
Polygon any closed 2D figure with line segments as sides
Solids any 3D figure with a length, a width, and a height
Composite Numbers any number with more than 2 factors
Numerator the top number of a fraction
Denominator the bottom number of a fraction
Equivalent is equal to
Tenths first decimal place to the right
Hundredths second decimal place to the right
Thousandths third decimal place to the right
Common factors factors that are shared by two or more numbers
Faces a flat surface that serves as one side of a solid figure
Vertices (vertex) a point where edges meet
Edges line segments where 2 faces meet
Ordered pairs points (x,y) on a coordinate grid
Perimeter distance around a figure
Volume Length x Width x Height
Probability a way of describing how likely it is that a particular outcome will occur, written as a fraction
Median the middle value when all the data are listed from least to greatest
Mode the most frequent number in the data
Range Largest number minus smallest number in the data