Category 1
The answer when adding two or more addends.
Sum
One of two or more numbers added together to find a sum.
Addend
An arrangement of objects, symbols, or numbers in rows and columns.
Array
The number of square units that cover a figure.
Area
Model when length and width are multiplied to find area.
Area Model
Opposite or reverse operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations.
Inverse Operations
A unit of area equal to the area of a square with one-unit sides.
Square Unit
One of two or more numbers multiplied to find a product.
Factor
The answer to a multiplication problem.
Product
A number close to an exact amount or to find about how many or how much.
Estimate
To find the nearest ten, hundred, thousand, or some other place value. The usual rounding rule is to round up if the next digit to the right is 5 or more and round down if the next digit to the right is less than 5.
Rounding
You can multiply a sum by a number, or multiply each addend by the number and add the products; the result is the same.
Distributive Property
A factor pair for a number is a pair of whole numbers whose product is that number.
Factor Pair
Describe quantities as greater than, less than, or equal to each other.
Compare
Smaller quantity or amount.
Fewer
A graph that uses pictures or symbols to represent data.
Pictograph
A number greater than 1 that has 1 and itself as the only factor pair.
Prime Number
A number greater than I that has more than one factor pair.
Composite Number
A number that is the product of a given number and any whole number.
Multiple
A diagram that shows the frequency of data on a number line.
Line Plot
The distance around a figure.
Perimeter
The measure of a line segment or one side of a figure.
Length
The measure of one side of a figure.
Width