3rd Grade Math Construct Relevant Vocabulary

Rounding

• Reducing the digits in a number while trying to keep its value similar.

• Increasing the digits in a number to make it larger.

• Changing a number to its nearest whole number without regard to value.

• Eliminating all decimal points from a number.

Time

• A measured period during which an action, process, or condition exists or continues.

• A unit of measurement for distance.

• A concept that refers to the past, present, and future.

• A method of organizing events in chronological order.

Area

• The amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle.

• The total length of the edges of a shape.

• The distance around a shape.

• The volume of a three-dimensional object.

Standard Units

• Units of measurement that are universally accepted and used.

• Units that vary by region and culture.

• Units that are only used in scientific contexts.

• Units that are outdated and no longer in use.

Multiply

• To increase a number by another number.

• To decrease a number by another number.

• To divide a number by another number.

• To find the square of a number.

Place Value

• The value of a digit based on its position within a number.

• The total value of all digits in a number.

• The value of a digit multiplied by its face value.

• The value of a digit when it is the first digit in a number.

Time Intervals

• The amount of time between two events.

• A measurement of distance traveled over time.

• A specific point in time.

• The duration of a single event.

Square Inch

• A unit of area equal to a square measuring one inch on each side.

• A unit of length equal to one inch.

• A unit of volume equal to a cube measuring one inch on each side.

• A unit of weight equal to one inch of material.

Denominator

• The top number in a fraction, indicating the number of parts taken.

• The bottom number in a fraction, showing how many equal parts the item is divided into.

• A term used to describe the whole number in a fraction.

• The number that represents the total quantity of items.

Expression

• A combination of numbers and symbols used to represent a mathematical value.

• A single number without any operations.

• A graphical representation of data.

• A statement that can be true or false.