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# Math Ch. 7

### Expressions and Patterns

TermDefinition
numerical expression a combination of numbers and at least one operation (Ex: 4 x 7)
evaluate to find the value of a numerical expression
order of operations a set of rules to follow when more than one operation is used in a numerical expression
Step 1 in Order of Operations Perform operations in parentheses.
Step 2 in Order of Operations Find the value of exponents.
Step 3 in Order of Operations Multiply and Divide in order from left to right.
Step 4 in Order of Operations Add and subtract in order from left to right.
sequence a list of numbers that follow a specific pattern
term each number in a sequence is called a _______
coordinate plane formed when two perpendicular number lines intersect, one number line has numbers on the x-axis and the other has numbers on the y-axis
origin the point where the two axes intersect on a coordinate plane (0,0)
ordered pair a pair of numbers that is used to name a point
x-coordinate the first number in an ordered pair, goes on the x-axis
y-coordinate the second number in an ordered pair, goes on the y-axis
Created by: Mrs.Cabell