7th Grade math

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RATIOS AND RELATIONAL PROPORTIONS

RATIONAL NUMBERS

PERCENTS AND PROPORTIONAL RELATIOSHIPS

GEOMETRY

STATISTICS AND PROBABILITY

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Tax a extra money you got to pay according to the goverment

Simple interest---is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time.

Calculating Tip-- For example, 10% of $50 would be $5. the 5$ is the tip you will give

Commission

Mark-up is the difference between the selling price of a product and cost

Mark-down

A number that can be p or q but q is not equal to 0

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Absolute Value: Describes the distance from 0, without considering the direction and the number is never negative.

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EQUATIONS

the values of two mathematical expressions are equal

INEQUALITIES

a statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

EXPRESSIONS

is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division

INTEGERS- Integer means intact or a whole number, but it also includes negative numbers.

DIVIDING

SUBTRACTING

MULTIPLIYING

ADDING

6c+10

6c+10=40

6c+10 > 40

x+3=x-11

Adjacent Angles. Vertical Angles. Angles on a line
Angles at point

Adjacent angles- two angles< BAC and < CAD with a common side AC are adjacent angles if C belongs to the interior of <BAD

Vertical Angles

Angles on a line

Angles on a point

Geometry Skills

Area

Surface area

Perimeter

Volume

Statistics-- a collection of quantitive data

Probabilities- a answer or the possible answers to a question, like when you flip a coin they could be many possibilities

Ratios- is a term used to compare two or more numbers to see if they are equal less or more

Proportion: describes the relationship between two quantities

Unit rate- means the rate of one of a something

Constant of proportionality- the ratio between two quantities , if one quantity increases the other as well does.

For example, if there is 1 boy and 3 girls you could write the ratio as: 1 : 3 (for every one boy there are 3 girls) 1 / 4 are boys and 3 / 4 are girls. 0.25 are boys (by dividing 1 by 4)

In a classroom they are 10 students 3/10 are boys and 7/10 are girls