5th- Math Vocabulary

exponent

A mathematical notation indicating the number of times a quantity is multiplied by itself.

millimeter

one thousandth of a meter

thousandths

The place to the right of hundredths

>,<, =

greater than, less than or equal to

base ten units

made by grouping 10 of previously made units

centimeter

one hundredth of a meter

standard form

writing a number using digits

tenths

The first place value after a decimal point. Is the largest decimal value.

unit form

a number written using digits and place value

word form

A way to write numbers by using words.

decimal fraction

A fractional number with a denominator of 10 or a power of 10. Usually written with a decimal point.

decimal

A number with one or more digits to the right of the decimal point

digit

a number

value

It is the answer or solution to a math problem.

divisor

The number by which another number is divided.

equation

A mathematical sentence that contains an equals sign.

expression

A mathematical phrase that contains operations, numbers, and/or variables.

equivalence

the state of being equal or alike in value

estimate

An approximation of a number based on reasonable assumptions

multiple

the product of a number and any whole number

pattern

a systematically consistent and recurring trait within a sequence

product

the answer to a multiplication problem

quotient

the answer to a division problem

remainder

The amount left over when one number is divided by another.

rounding

Expressing a number to the nearest thousandth, hundredth, tenth, one, ten, hundred, thousand, and so on as directed.

benchmark fraction

Common fractions used for estimating, such as 1/4, 1/3, 1/2, 2/3, & 3/4.

like denominator

fractions that have the same denominator

unlike denominator

Denominators that are not equal.

sum

the answer to an addition problem

difference

the answer to a subtraction problem

factor

One of two or more numbers that multiply together to get a product.

mixed number

a number that consists of an integer and a proper fraction.

cubic units

Units used to measure volume, calculated as length times width times height in a three-dimensional space.

bisect

To divide something into two equal parts, typically referring to angles or line segments.

right angle

An angle that measures exactly 90 degrees, often represented by a square symbol in geometric diagrams.

obtuse angle

An angle that measures more than 90 degrees but less than 180 degrees.

scalene triangle

A triangle with all sides of different lengths and no equal angles.

Isosceles Triangle

A triangle with at least two sides of equal length and two angles that are also equal.

equilateral triangle

A triangle with all three sides of equal length and all three angles measuring 60 degrees.

kite

A quadrilateral with two distinct pairs of adjacent sides that are equal in length.

rhombus

A quadrilateral with all four sides of equal length, opposite angles are equal, and adjacent angles are supplementary.

trapezpoid

A quadrilateral with at least one pair of parallel sides.

polygon

A closed two-dimensional shape formed by a finite number of line segments, called edges, that connect to form vertices.

Perpendicular lines

Lines that intersect at a right angle (90 degrees).