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Rational Number

Any number that can be expressed as a ratio of two integers. Example; 6 can be expressed as 6/1, and 0.5 as 1/2.

expression

A mathematical phrase without an equal sign.

Equation

A mathematical sentence that contains an equals sign

area

the surface; Length x Width

perimeter

The distance around a geometric figure.

Congruent

A plane figure with the same size and shape.

isosceles triangle

Triangle with 2 equal sides and 2 equal angles.

Scalene Triangle

A triangle with no congruent sides

composite figure

a figure made up of two or more figures

unit rate

A rate with the denominator of 1.

ratio

A comparison of two quantities, also know as fancy word for fraction.

proportion

An equation that states that two ratios are equal.

decimal

a number with one or more digits to the right of the decimal point

fraction

a part of a whole

percent

/ division

lateral surface area

The sum of all the areas of the faces of a 3D solid except the bases

total surface area

The sum of all the areas of the faces of a 3D solid

b

the area of the base of a solid figure

p

the perimeter of the base of a solid figure

polygon

a closed figure made by joining line segments where each line segment intersects exactly 2 others

3n / 4n = 3/4

There are 3 times as many boys as girls in a class. What is the ratio of boys to the total number of students? Let n = the number of girls

Inputs: Time, work, money

What are the most frequent quantities used as inputs in math problems? Frequent quantities used as outputs?

A ratio

What is signified by the word per in a word problem?

speed x time = distance

What is the fundamental relationship of a distance problem?

What is the fundamental relationship of a mixture problem?

concentration x amount of solution = amount of ingredient

What is the fundamental relationship of a cost problem?

price per item x number of items = value of items

rate x time = work done

What is the fundamental relationship of a work problem?

Proportion formula

Numerators must be reflected in the same unit/measurment and the same for the denominators (A units/B units = A units/B units)