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# Carnegie Chapter 7

### math

conventions In mathematics, rules to clarify the order of how to solve problems.
numerical expression Is a mathematical phrase containing numbers.
evaluate Means to calculate an expression to get a single value.
operations Addition, subtraction, multiplication, and division.
parentheses Symbols used to group numbers and operations, and are used to change the normal order in which you perform operations.
order of operations A set of rules that ensures the same result every time an expression is evaluated.
square of a number A number multiplied by itself 2 times.
perfect squares The 1, 4, and 9 are examples because each is the square of a whole number.
square root A square root is one of two equal factors of a given number. Every number has a positive and a negative one.
radical The symbol, √ is used to indicate square roots.
perfect cube The cube of a whole number.
cube of a number To calculate this you multiply the number by itself 3 times.
cube root One of 3 equal factors of a number.
index The number placed above and to the left of the radical to indicate what root is being calculated.
variable The use of letters or symbols in a mathematical sentence that are called...
algebraic expression A mathematical phrase involving at least one variable, and sometimes numbers and operation symbols.
equation A mathematical sentence that contains an equal sign. It can contain numbers, variables, or both in the same mathematical sentence.
numerical coefficient A number, or quantity, that is multiplied by a variable in an algebraic expression.
constant A number, or quantity, that does not change its value.
evaluate an algebraic expression To determine the value of the expression.
multiple representations This problem situation was represented in several ways: ● a diagram of figures ● a table of values ● a verbal description ● an algebraic expression ● a graph.
Created by: molnarmath