Numbers & Operations
A whole number and a fraction combined (like 2 ½).
Mixed number
The answer to a multiplication problem.
Product
The amount of space inside a shape (length × width for rectangles).
Area
An angle that measures exactly 90 degrees.
Right angle
A way to show part of a whole using a numerator (top) and denominator (bottom).
Fraction
The value of a digit based on where it is in the number (ones, tens, hundreds, etc.).
Place value
The number you are dividing by.
Divisor
The amount of space inside a 3D object (length × width × height).
Volume
Lines that never cross and are always the same distance apart.
Parallel lines
To make a fraction as simple as possible.
Simplify, reduce, or regroup
A number you can multiply to get another number.
Factor
The number you are dividing.
Dividend
To change from one unit to another (like inches to feet, or grams to kilograms).
Convert
An angle smaller than 90 degrees.
Acute angle
A closed shape with straight sides.
Polygon
Different fractions that represent the same value (like 1/2 = 2/4).
Equivalent fractions
A math phrase with numbers and operations but no equal sign (like 3 + 5 × 2).
Expression
The set of numbers that show the units used on a graph.
Scale
A shape with four sides (like a square or rectangle).
Quadrilateral
Lines that cross to form right angles.
Perpendicular Lines
A fraction where the top number is bigger than the bottom (like 5/3).
Fraction greater than 1 OR improper fraction
The answer to a division problem.
Quotient
Units of measurement based on the this system, like meters, liters, and grams.
Metric system
Two numbers (x, y) that show a point on the coordinate plane.
An angle bigger than 90 degrees but less than 180.
Obtuse angle