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Math Vocabulary Study Guide
TEST: Tuesday, April 25
Sixty-seven thousand,
67,893
Standard
60,000 + 7,000 + 800 + 90 + 3
(6 x 10,000) + (7 x 1,000)
eight hundred ninety-
+ (8 x 100) + (9 x 10) + (3
three
x 1)
Word Form
Expanded Form
Expanded Notation
Form
Graph Key: The part of a pictograph that explains what each symbol represents.
Even Number: Any number that can be split into 2 equal groups. They have a 0, 2, 4, 6, or 8 in the
one’s place.
Odd Number: Any number that cannot be split into 2 equal groups. They have a 1, 3, 5, 7, or 9 in the
one’s place.
> Greater Than
< Less Than
= Equal To
Estimate: When you are asked to find an answer that is close to the answer. (Approximately, About,
Round)
Addition: The math operation that is used when you join 2 or more unequal groups of objects
together. The answer to an addition problem is called the sum.
Subtraction: The math operation that is used to compare or find the difference between numbers.

Difference: The answer to a subtraction problem.
Multiplication: The math operation that is used when you need to join equal groups. You are looking
for the total. The answer to a multiplication problem is called the product.

Factor: Numbers that are multiplied together to give a problem.

Array: A way of displaying a multiplication or division problem in rows and columns.
Division: The math operation that is used when you need to separate or put objects into equal
groups. The total is given to you in the word problem and you are looking for the number in each
group or the number of groups. The answer to a division problem is called the quotient.
Fraction: A number used to name a part of a whole, a part of a set, or a location on a number line.
There must be equal parts.

Numerator: The number above the fraction bar in a fraction.

Denominator: The number below the fraction bar in a fraction. It tells you the total number of
equal parts in all.

Decomposing Fraction: Breaking up a fraction into the sum of its unit fractions. For example,
¾ = ¼ + ¼ + ¼.

Equivalent Factions: Two or more fractions that name the same
amount.
Congruent: When shapes are the same shape and same size.
Area: The number of square units that cover a region. You can just count the squares, or use Area =
Length x Width if the shape is a rectangle or a square.
Perimeter: The distance around a figure. You add together the length of each side to determine the
perimeter.
Pattern: A set of numbers or objects that follow a rule.
Example: 3, 6, 9, 12, 15
Rule: +3
Polygon: A closed figure made up of straight line segments.

Triangle: A polygon with 3 sides.

Quadrilateral: A polygon with 4 sides.
o Trapezoid: A quadrilateral with only one pair of parallel lines.
o Parallelogram: A quadrilateral in which opposite sides are parallel.

Rhombus: A quadrilateral with all 4 sides the same length.

Rectangle: A quadrilateral with 4 right angles.

Square: A quadrilateral with 4 right angles and all 4 sides the same length.

Pentagon: A polygon with 5 sides.

Hexagon: A polygon with 6 sides.

Octagon: A polygon with 8 sides.
Faces: A flat surface on a solid figure.
Vertices: The point where 2 rays meet to form an angle.
Edges: A line segment where 2 faces meet.
----------------------------- -------------------------------------------Student’s Name_________________________ Parent’s Signature___________________________
The test will be Tuesday, April 25th!