Download 6th Grade Math Vocabulary Words for the 1st Nine Weeks

6th Grade Math Vocabulary Words for the 1st Nine Weeks
Unit 1 Operations with Positive Fractions & Decimals (15days)
Positive rational numbers – the set of numbers that can be expressed as a fraction
, where a > 0 and b > 0
Reciprocal – a quantity that is used to multiply by a given quantity which results in the product of one
Unit 2 Geometry & Measurement (9 days)
Acute – an angle that measures less than 90°
Angle – two rays with a common endpoint (the vertex)
Angle congruency marks – angle marks indicating angles of the same measure
Area – the measurement attribute that describes the number of square units a figure or region covers
Base of a rectangular prism – any two congruent, opposite and parallel faces shaped like rectangles; possibly
more than one set
Congruent – of equal measure, having exactly the same size and same shape
Equation – a mathematical statement composed of algebraic and/or numeric expressions set equal to each
other
Face – a flat surface of a three-dimensional figure
Height of a rectangular prism – the length of a side that is perpendicular to both bases
Obtuse – an angle that measures greater than 90° but less than 180°
Polygon – a closed figure with at least 3 sides, where all sides are straight (no curves)
Positive rational numbers – the set of numbers that can be expressed as a fraction
, where a > 0 and b > 0
Prism – a three-dimensional figure containing two congruent and parallel faces that are polygons
Properties of triangles – relationship of attributes within a triangle (e.g., an equilateral triangle has all sides and
angles congruent, the sum of the lengths of two sides of a triangle is always greater than the length of the third
side, the sum of the angles of a triangle is always 180°; etc.)
Right Angle – an angle (formed by perpendicular lines) that measures exactly 90°
Three-dimensional figure – a figure that has measurements including length, width (depth), and height
Triangle – a polygon with three sides and three vertices
Two-dimensional figure – a figure with two basic units of measure, usually length and width
Unit rate – a ratio between two different units where one of the terms is 1
Volume – the measurement attribute of the amount of space occupied by matter
Unit 3 Operations with Integers (12 days)
Absolute value – the distance of a value from zero on a number line
Integers – the set of counting (natural numbers), their opposites, and zero {–n, …, –3, –2, –1, 0, 1, 2, 3, ..., n}.
The set of integers is denoted by the symbol Z.
Unit 4 Equivalent forms of Fractions (12 days)
Percent – a part of a whole expressed in hundredths
Positive rational numbers – the set of numbers that can be expressed as a fraction
, where a > 0 and b ≠ 0