Pre-Algebra Vocabulary Flashcards

Questions and Answers

What does the term 'numerical expression' refer to?

consists of words and numbers

consists of letters and operations

consists of numbers and operations (correct)

a letter used to represent numbers

What is a variable in mathematics?

a letter used to represent one or more numbers

What is a variable expression?

consists of numbers, variables, and operations

To evaluate a variable expression, substitute a number for each variable and evaluate the resulting ______.

numerical expression Signup and view all the answers

What is a verbal model?

describes a problem using words as labels and using math symbols to relate the words Signup and view all the answers

What is a power in mathematics?

is the result of a repeated multiplication of the same factor Signup and view all the answers

What part of a power is referred to as the base?

the part used as the factor Signup and view all the answers

What does the exponent in a power indicate?

the number of times the base is used as the factor Signup and view all the answers

What is the order of operations?

a set of rules mathematicians have agreed on to evaluate expressions involving more than one operation Signup and view all the answers

Define an integer.

the set of numbers -3, -2, -1, 0, 1, 2, 3, ... Signup and view all the answers

What are negative integers?

integers that are less than zero Signup and view all the answers

What are positive integers?

integers that are greater than zero Signup and view all the answers

What is absolute value?

the distance a number is from zero on a number line Signup and view all the answers

What does it mean for two numbers to be opposites?

having the same absolute value but different signs Signup and view all the answers

What is the additive inverse of a number?

the opposite of a number Signup and view all the answers

Define the term difference in mathematics.

the result of subtracting two numbers Signup and view all the answers

What is the mean?

the sum of the values divided by the number of values Signup and view all the answers

What is the median?

middle value when the values are written in numerical order Signup and view all the answers

What is the mode?

is the value that occurs most often Signup and view all the answers

What is range in statistics?

the difference of the greatest value and the least value Signup and view all the answers

Define a coordinate plane.

intersection of a horizontal number line called the x-axis and the vertical number line called the y-axis Signup and view all the answers

What is an ordered pair?

a pair of numbers that can be used to locate a point on a coordinate plane Signup and view all the answers

What is a scatter plot?

uses a coordinate plane to display paired data Signup and view all the answers

Study Notes

Pre-Algebra Vocabulary

Numerical Expression: A combination of numbers and operations that represent a specific value.
Variable: A symbol (usually a letter) that represents one or more numbers in mathematical expressions.
Variable Expression: An expression that includes numbers, variables, and mathematical operations.
Evaluate: The process of substituting numbers for variables in a variable expression to compute a numerical value.
Verbal Model: A description of a mathematical problem using words and symbols to relate different concepts.
Power: The result obtained from multiplying the same factor several times; composed of a base and an exponent.
Base: The number that is multiplied in a power expression; serves as the fundamental factor.
Exponent: Indicates how many times the base is multiplied by itself in a power expression.
Order of Operations: A set of rules agreed upon by mathematicians for evaluating expressions with multiple operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).
Integer: Whole numbers that can be positive, negative, or zero, represented as {..., -3, -2, -1, 0, 1, 2, 3, ...}.
Negative Integers: Integers that are valued less than zero, such as -1, -2, -3, etc.
Positive Integers: Integers that are valued greater than zero, including 1, 2, 3, etc.
Absolute Value: The non-negative distance of a number from zero on the number line, disregarding its sign.
Opposite: Two numbers that have the same absolute value but differ in sign (e.g., -3 and 3).
Additive Inverse: The opposite of a number, which sums with the original number to yield zero.
Difference: The outcome of subtracting one number from another.
Mean: The average value calculated by dividing the sum of a set of numbers by the count of those numbers.
Median: The middle value of a numerical data set when ordered; if the number count is even, the median is the average of the two middle values.
Mode: The number that appears most frequently in a data set.
Range: The difference between the highest and lowest values in a data set.
Coordinate Plane: Formed by the intersection of a horizontal axis (x-axis) and a vertical axis (y-axis), allowing for the visualization of points.
Ordered Pair: A pair of numbers (x, y) used to define a specific point on a coordinate plane.
Scatter Plot: A graphical representation that uses the coordinate plane to display two-variable data, showing patterns and relationships.

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Test your knowledge of key pre-algebra vocabulary with these flashcards. This quiz covers essential terms such as numerical expressions and variables, helping you understand the building blocks of algebraic concepts. Perfect for students looking to reinforce their understanding of pre-algebra terms.