7Th Grade Math Vocab

Front 1

Terminating Decimal:

Back 1

Is a decimal that has an end.

Front 2

Repeating Decimal:

Back 2

Is a decimal that doesn't have an end to it.

Front 3

Opposite:

Back 3

2=-2 6=-6 8=-8

The opposite of a positive number is the negative of that positive number.

Front 4

Inverse Operation:

Back 4

operations that undo each other

Addition and Subtraction are inverse operations

Front 5

Absolute Value:

Back 5

The magnitude of a real number without regard to it's sign.

Front 6

Simplify:

Back 6

bringing a fraction down to its lowest terms.

Front 7

Evaluate:

Back 7

To evaluate is to find the value of a numerical or algebraic expression

Front 8

Substitute:

Back 8

Definition of Substitution Method. One way to solve systems of equations is by substitution. In this method, solve an equation for one variable, then substitute that solution in the other equation, and solve

Front 9

Coordinate:

Back 9

A coordinate is a number in an ordered pair that names the location of a point on the coordinate plane. The first number in the ordered pair is called the abscissa and the second number is the ordinate

Front 10

Origin:

Back 10

In mathematics, the origin of a Euclidean space is a special point, usually denoted by the letter O, used as a fixed point of reference for the geometry of the surrounding space

Front 11

Proportion:

Back 11

form an idea of the amount, number, or value of, assess.

Front 12

Conversion:

Back 12

the act or an instance of converting or the process of being converted.

Front 13

Integers:

Back 13

an integer is a positive or negative, whole number.

Front 14

Rational Numbers:

Back 14

Terminating Decimal:Repeating Decimal:Opposite:Inverse Operation:Absolute Value:Simplify:Evaluate:Substitute:Coordinate:Origin:Proportion:Conversion:Integers:Rational Numbers:Base:Power:Algebraic Expression:Coefficient:Like Terms:Variable:Inequality:Ratio:Equivalent Ratios:Rate:Unit Rate:Unit Cost:Cross Product:

Front 15

Base:

Back 15

Terminating Decimal:Repeating Decimal:Opposite:Inverse Operation:Absolute Value:Simplify:Evaluate:Substitute:Coordinate:Origin:Proportion:Conversion:Integers:Rational Numbers:Base:Power:Algebraic Expression:Coefficient:Like Terms:Variable:Inequality:Ratio:Equivalent Ratios:Rate:Unit Rate:Unit Cost:Cross Product:

Front 16

Power:

Back 16

Terminating Decimal:Repeating Decimal:Opposite:Inverse Operation:Absolute Value:Simplify:Evaluate:Substitute:Coordinate:Origin:Proportion:Conversion:Integers:Rational Numbers:Base:Power:Algebraic Expression:Coefficient:Like Terms:Variable:Inequality:Ratio:Equivalent Ratios:Rate:Unit Rate:Unit Cost:Cross Product:

Front 17

Algebraic Expression:

Back 17

An algebraic expression is a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide)

Front 18

Coefficient:

Back 18

A number or symbol multiplied with a variable or an unknown quantity in an algebraic term. For example, 4 is the coefficient in the term 4x, and x is the coefficient in x(a + b). A numerical measure of a physical or chemical property that is constant for a system under specified conditions

Front 19

Like Terms:

Back 19

"Like terms" are terms whose variables (and their exponents such as the 2 in x2) are the same. In other words, terms that are "like" each other. Note: the coefficients (the numbers you multiply by, such as "5" in 5x) can be different.

Front 20

Variable:

Back 20

Variable definition. A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable. The letters , , and are common generic symbols used for variables

Front 21

Inequality:

Back 21

Math Term Definition. Inequality. An inequality is like an equation that uses symbols for "less than"(<) and "greater than"(>) where an equation uses a symbol for "is equal to" (=)

Front 22

Ratio:

Back 22

Relation in degree or number between two similar things. The relative value of silver and gold in a currency system that is bimetallic.Mathematics A relationship between two quantities, normally expressed as the quotient of one divided by the other; for example, the ratio of 7 to 4 can be written 7:4 or 7/4

Front 23

Equivalent Ratios:

Back 23

ratios that are the same.

Front 24

Rate:

Back 24

In mathematics, a rate is the ratio between two related quantities Often it is a rate of change. If the unit or quantity in respect of which something is changing is not specified, usually the rate is per unit of time

Front 25

Unit Rate:

Back 25

Unit Rates. A rate is a ratio that is used to compare different kinds of quantities. A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. Some common unit rates are miles (or kilometers) per hour, cost per item, earnings per week, etc

Front 26

Unit Cost:

Back 26

The "Unit Price" (or "unit cost") tells you the cost per liter, per kilogram, per pound, etc, of what you want to buy. Just divide the costby the quantity: Example: 2 liters for $3.80 is $3.80/2 liters = $1.90 per liter

Front 27

Cross Product:

Back 27

take the top left of a fraction and multiply it with the bottom right. Then take the top right and multiply it with the bottom left.