The measurement, in square units, of the inside of a shape.

Numbers that are multiplied together to get a product.

To write a number using words

The amount left over after a division problem.

The top part of a fraction that shows how much you have

2 lines that never intersect

To combine or put together 2 or more quantities

Equal (when talking about shapes, lines, and angles)

Equal (when talking about fractions)

The answer to a subtraction problem

Numerical version of a number (written in digits)

A point where line segments meet

A quadrilateral with 2 pairs of opposite parallel sides.

Split into equal parts or groups.

A number being added

The bottom number of a fraction

The total measurement of the outside of a shape

A fraction with a numerator that is greater than the denominator.

A number that consists of a whole number and a fractional amount

This shows data on a number line with a symbol to show the frequency of a number in a data set.

A symbol to represent a number that you do not know yet

ABOUT how much or how many, something close to the actual answer.

A number that contains a fractional amount AND a decimal point

Separates the whole number from the fractional amount in a decimal

One place to the right of the decimal, worth 1/10

The place value that is two places to the right of the decimal point, worth 1/100

Expanding the value of a number it to show the value of each digit in an addition expression

The value of a digit based upon its place in a number

Any single numeral 0-9

A way of estimating that keeps the value near the original number.

An arrangement of objects, pictures, or numbers in equal rows and equal columns

Determine if a number is greater than, less than, or equal to another number.

A method for completing multiplication by solving partial, smaller problems first.

A way to model multiplication as the area of a rectangle

The number that you are dividing by, which is the number of equal groups you are creating

The number that you are dividing or breaking into equal groups.

A line on which numbers are marked at intervals which can be used to solve problems.

A way to describe a part of a whole, group, or set that has been divided into equal groups

Commonly used, recognizable fractions used for estimating

A collection of facts, such as measurements, observations, numbers, words, or descriptions

Two lines, line segments, or rays that meet at a right angle

A straight figure that extends in both directions with no end.

A straight figure that has two distinct endpoints.

A straight figure that has one endpoint and extends in the other direction without end.

To meet or cross over

An angle with a measure of 90 degrees

An angle with a measure of less than 90 degrees but more than 0 degrees

An angle with a measure of more than 90 degrees but less than 180 degrees

An angle with a measure of 180 degrees.

An exact point or location