5th Grade Math Vocabulary (Term First)

Acute Angle

• An angle that has a measure less than a right angle (less than 90 degrees and greater than 0 degrees)
• A triangle that has three acute angles.
• A fraction that has 1 as a numerator.
• A set of related multiplication and division, or addition and subtraction, equations.

Tags

CCSS.4.G.A.1

Acute Triangle

• A triangle that has three acute angles.
• An identification card issued by a bank that allows a user to buy items and services immediately and pay the cost at a later time. The bank usually charges interest in exchange for the use of the money.
• A mathematical phrase or the part of a number sentence that combines numbers, operation signs, and sometimes variables, but does not have an equal sign.
• The amount left over when a number cannot be divided equally.

Tags

CCSS.4.G.A.2

Addend

• A number that is to be added to another number.
• The result of addition.
• A customary unit used to measure capacity. 3 teaspoons = 1 tablespoon.
• A symbol used to separate dollars from cents in money, and to separate the ones place from the tenths place in a decimal.

Tags

CCSS.5.NBT.B.7

Addition

• The process of finding the sum (total number) of items when two or more groups of items are joined; the opposite of subtraction.
• Estimated numbers that are easy to compute mentally. They do not have to follow the rounding rules.
• Estimated numbers that are easy to compute mentally. They do not have to follow the rounding rules.
• Extending up and down.

Angle

• A shape formed by two line segments or rays that share the same endpoint.
• A polygon with seven sides and seven angles.
• An instrument used to weigh objects and to compare the weights of objects.
• A symbol used to compare two numbers or two quantities when the greater number or greater quantity is given first.

Area

• The measure of the number of unit squares needed to cover a surface.
• If the ORDER of the addends changes, the sum stays the same.
• If the GROUPING of factors change, the product stays the same.
• A customary unit used to measure length or distance. 5,280 feet = 1 mile.

Tags

CCSS.3.MD.C.5A

Array

• An arrangement of objects in rows and columns.
• A metric unit used to measure length or distance. 10 decimeters = 1 meter.
• A metric unit for measuring temperature.
• The vertical number line on a coordinate plane.

Associative Property of Addition

• If the GROUPING of addends changes, the sum stays the same.
• One of ten equal parts.
• A customary unit used to measure capacity. 8 ounces = 1 cup.
• One or one thousand equal parts.

Tags

CCSS.1.OA.B.3

Associative Property of Multiplication

• If the GROUPING of factors change, the product stays the same.
• Extending left and right.
• A polygon with ten sides and ten angles.
• A customary unit used to measure length or distance. 12 inches = 1 foot.

Tags

CCSS.3.OA.B.5

Balance

• To equalize in weight or number.
• A fraction that has 1 as a numerator.
• The point where the two axes of a coordinate plane intersect (0,0).
• A unit used to measure volume such as cubic foot, cubic meter, etc.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B