Basic Operations
Geometry
Algebra
Probability
Potpourri
100

The answer when adding numbers.

Sum

100

Where two lines meet.

Vertex

100

The amount a term has been multiplied by.

Coefficient

100

The average of a group of numbers.

Mean

100

Collect together like terms to make the expression or equation look more compact.

Simplify

200

The answer when subtracting numbers.

Difference

200

A triangle with two equal sides.

Isosceles Triangle

200

Multiply out the expressions inside parentheses.

Expand

200

All possible outcomes of an event.

Sample Space

200

An angle that measures more than 90 degrees.

Obtuse

300

A symbol or letter that stands for a number.

Variable

300

Lines that appear to never cross or meet.

Parallel 

300

Acronym for completing algebraic equations

PEMDAS (Parenthesis, Exponents (powers, square roots), Multiplication, Division, Addition, Subtraction)

300

The chances of an event happening based on the number of possible outcomes.

Theoretical Probability

300

Sides or segments have the exact same length.

Congruent

400

The highest number that divides exactly into two or more numbers.

Greatest Common Factor

400

Lines that cross and form right angles.

Perpendicular

400

Put into parentheses.

Factorize

400

The chances of an event happening based on an experiment.

Experimental Probability

400

The distance across a circle.

Diameter

500

A process or set of rules to be followed in calculations or other problem-solving operations.

Algorithm

500

An angle that measures less than 90 degrees.

Acute

500

Used to compare the size of different parts of a whole.

Ratio

500

An event that has more than a 50% chance of happening.

Likely

500

Property that allows for numbers to be added or multiplied in any order and the answer will remain the same.

Commutative Property