Pre Algebra

Question 1

Variable

Answer 1

A symbol that represents an unknown value.
Common examples:
x,y,z.

Question 2

Expression

Answer 2

A combination of numbers, variables, and operations.
Example:

2a+3b−5

Question 3

Term

Answer 3

Parts of an expression separated by + or - signs.
Example: In 3x+4, the terms are 3x and 4.

Question 4

Factor

Answer 4

Numbers or variables multiplied together in a term.
Example: In 5xy, the factors are 5, x, and y.

Question 5

Coefficient

Answer 5

The numerical part of a term with variables.
Example: In 6z, the coefficient is 6.

Question 6

Sum

Answer 6

The result of adding terms together.
Example:

a+b is the sum of
a and b.

Question 7

Product

Answer 7

The result of multiplying factors.

Example: The product of 2 and 3 is 2×3=6

Question 8

Equation

Answer 8

A mathematical statement showing that two expressions are equal.
Example: 2x+3=7

Question 9

Reciprocal

Answer 9

The inverse of a number or expression.
Example: The reciprocal of 4 is
1/4