Grade 3Glossary

A set of steps that works every time as long as the steps are carried out correctly.

The space where 2 sides of a shape meet.

The number of square units that cover a flat figure without gaps or overlaps.

An arrangement of objects in rows and columns. Each column must contain the same number of objects as the other columns, and each row must have the same number of objects as the other rows.

A way to show how many in each group or category using the length of rectangles.

The bottom part of a fraction that tells how many equal parts the whole was partitioned into.

Finding the number of groups or finding the size of each group when we share into groups of equal size.

The number we are dividing by which can represent the size of the groups or the number of groups.

A statement that includes an equal sign (=). It tells us that what is on one side of the sign is equal to what is on the other side.

Fractions that have the same size and describe the same point on the number line. For example, and are equivalent fractions.

A specific way of writing a number as a sum of hundreds, tens, and ones.

Expanded form writes a number as a sum of the value of each digit. Example: 482 written in expanded form is .

An expression has at least 2 numbers and at least one math operation (such as addition, subtraction, multiplication and division).

When we multiply two whole numbers to get a product, each of those numbers is a factor of the product.

A number used to describe the parts of a whole that has been partitioned into equal parts.

A weight unit that is part of the metric measurement system. 

There are 1,000 grams in a kilogram.

The part of a picture graph that tells what each picture represents.

A weight unit that is part of the metric measurement system. 

There are 1,000 grams in a kilogram.

The amount of space that a liquid takes up.

A liquid volume unit that is part of the metric measurement system.

A number expressed as a whole number and a fraction less than 1. 

The operation that tells you the total number of objects when you have a certain number of equal groups.

The top part of a fraction that tells how many of the equal parts are being described.

Grouping symbols that can be used in expressions or equations, such as: .

Another word we can use to say something was split into pieces or parts.

A perimeter is the boundary of a flat shape. We can find the length of the perimeter by finding the sum of the lengths of the sides of the shape.

A way to show how many in each group or category using pictures of the objects or symbols.

two-dimensional closed figure with three or more line segments.

The result of multiplying some numbers.

The result in a division equation.

The angle in the corner of a square or a rectangle.

A formal way to say which number a given number is closer to. For example, for 182, the number 180 is the closest multiple of ten and 200 is the closest multiple of a hundred. We can round 182 to 180 (if rounding to the nearest ten) or 200 (if rounding to the nearest hundred).

A bar graph marked in multiples of some number other than 1.

A picture graph where each picture represents an amount other than 1.

A square with side lengths of 1 centimeter.

A square with side lengths of 1 foot.

A square with side lengths of 1 inch.

A square with side lengths of 1 meter.

A fraction with 1 in the numerator.

How heavy something is.