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Level 75

Evaluating Algebraic Expressions


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Variable
an alphabetic character representing a number, called the value, which is either arbitrary or not fully specified or unknown. It is usually a letter like x or y.
Coefficient
the decimal part
algebraic expression
An expression consisting of one or more numbers and variables along with one or more arithmetic operations
constant
A value that does not change.
Evaluate
To find the value of a mathematical expression.
substitute
To replace a variable with a number or another expression in an algebraic expression.
absolute value
The distance of a number from zero on a number line; shown by | |
Integers
the set of positive whole numbers and their opposites(negative numbers) and 0
Equation
A mathematical sentence that contains an equals sign
inequality
A mathematical sentence that shows the relationship between quantities that are not equivalent
inverse operation
Operations that undo each other
opposites
two numbers that have the same absolute value but have different signs
constant
3, 0, -1
Addition
to join two or more quantities
Subtraction
to take a quantity away from another
Multiplication
process of repeated addition
Division
process of breaking a quantity into equal parts
10
b + 4 when b=6
50
5 x y when y=10
5
z - 3 when z=8
7
k divided by 2 when k=14
32
m x 8 when m=4
45
q + 20 when q=25
55
d - 5 when d = 60
9
n divided by 3 when n=27