7th Grade Math Vocabulary Flashcards
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Questions and Answers

What are vertical angles?

  • Two adjacent angles
  • Two angles formed by intersecting lines (correct)
  • Two angles whose sum is 180 degrees
  • Two angles that share a common ray

What is the definition of the rate of change?

The constant repeated change

What does it mean to approximate a number?

To round it to the nearest whole number

Define scale in mathematics.

<p>The ratio to either increase or decrease dimensions or sizes</p> Signup and view all the answers

What is an inverse operation?

<p>Math operation that 'undoes' the other</p> Signup and view all the answers

What does it mean to simplify an expression?

<p>To reduce to simplest form</p> Signup and view all the answers

What is the value of Pi?

<p>3.14...</p> Signup and view all the answers

Define reciprocal in terms of fractions.

<p>The 'flip' of a fraction</p> Signup and view all the answers

What are complementary angles?

<p>Two angles whose sum is exactly 90 degrees</p> Signup and view all the answers

Define supplementary angles.

<p>Two angles whose sum is exactly 180 degrees</p> Signup and view all the answers

What are adjacent angles?

<p>Two angles that share a common ray</p> Signup and view all the answers

What is the circumference of a circle?

<p>The distance around a circle</p> Signup and view all the answers

What is the radius of a circle?

<p>Halfway across a circle from the center to a point on the edge</p> Signup and view all the answers

Define diameter.

<p>The distance from one edge of a circle, through the center, to the other edge</p> Signup and view all the answers

What is the range in data sets?

<p>The difference in the largest and smallest data points in a set</p> Signup and view all the answers

What is interquartile range?

<p>The difference in the 3rd and 1st Quartiles in a data set</p> Signup and view all the answers

Define mean.

<p>The average of all the data points</p> Signup and view all the answers

What is the formula for the circumference of a circle?

<p>C = πd or C = 2πr</p> Signup and view all the answers

What is the area of a circle?

<p>A = πr²</p> Signup and view all the answers

Define composite shape.

<p>Two-dimensional shape made up of multiple basic shapes</p> Signup and view all the answers

What is another name for the order of operations?

<p>PEMDAS</p> Signup and view all the answers

What is the distributive property?

<p>It involves multiplying a term outside the parentheses across terms inside the parentheses.</p> Signup and view all the answers

Dependent probability means two events where the first event does affect the second event.

<p>True (A)</p> Signup and view all the answers

Independent probability means the first event does not affect the second event.

<p>True (A)</p> Signup and view all the answers

What is the formula for the area of a triangle?

<p>A = ½bh</p> Signup and view all the answers

Part = % x 100, the missing word is:

<p>Whole</p> Signup and view all the answers

Two equivalent ratios are called a _____ .

<p>Proportion</p> Signup and view all the answers

How much it takes to cover a 2D shape is called its ____.

<p>Area</p> Signup and view all the answers

How much it takes to cover a 3D figure is called its ____ _____.

<p>Surface Area</p> Signup and view all the answers

How much it takes to fill up a 3D figure is called its ______.

<p>Volume</p> Signup and view all the answers

When solving inequalities, what must you do when you divide or multiply by a negative?

<p>Flip the inequality</p> Signup and view all the answers

The letter that is in expressions and equations is called a ___.

<p>Variable</p> Signup and view all the answers

In equations and expressions, the number by itself is called the _____.

<p>Constant</p> Signup and view all the answers

In equations and expressions, the number being multiplied to the variable is called the _____.

<p>Coefficient</p> Signup and view all the answers

What is sales tax?

<p>A percent of anything you buy that is added onto the cost</p> Signup and view all the answers

What is a tip in restaurant terms?

<p>A percentage of your bill that you pay to the server for their service</p> Signup and view all the answers

Define probability.

<p>How likely or unlikely an event is.</p> Signup and view all the answers

What is theoretical probability?

<p>Probability based on mathematical reasoning</p> Signup and view all the answers

Define experimental probability.

<p>Probability calculated from observation.</p> Signup and view all the answers

What is a dot plot?

<p>A diagram of a data set plotted on a number line.</p> Signup and view all the answers

What does 'spread' in statistics refer to?

<p>Measures of the numbers in a data set relative to the center.</p> Signup and view all the answers

What is the formula for finding the constant of proportionality?

<p>K = y/x</p> Signup and view all the answers

What is the formula for the area of a rectangle?

<p>A = bh</p> Signup and view all the answers

What is the formula for the area of a trapezoid?

<p>A = ((b1 + b2)h)/2</p> Signup and view all the answers

What is a percent?

<p>A part-to-whole ratio with a whole of 100</p> Signup and view all the answers

Define ratio.

<p>A comparison of two quantities.</p> Signup and view all the answers

What is simple interest?

<p>A percentage of the original amount</p> Signup and view all the answers

What is absolute value?

<p>A number's distance from zero</p> Signup and view all the answers

Define base in relation to shapes.

<p>The bottom of a shape, solid, or three-dimensional object</p> Signup and view all the answers

What is the base in terms of exponents?

<p>The number that gets multiplied when using an exponent.</p> Signup and view all the answers

What is a coordinate plane?

<p>The plane containing the 'x' axis and 'y' axis.</p> Signup and view all the answers

What is the denominator in a fraction?

<p>The bottom number in a fraction</p> Signup and view all the answers

What is the difference in mathematics?

<p>The result of subtracting one number from another</p> Signup and view all the answers

Define distance in math.

<p>Length, a measurement of how far through space</p> Signup and view all the answers

What is a terminating decimal?

<p>A decimal whose digits end, can be written as a fraction with a power of 10 denominator</p> Signup and view all the answers

What is a dividend?

<p>The amount that you want to divide up</p> Signup and view all the answers

What is a divisor?

<p>The number we divide by</p> Signup and view all the answers

Define equation.

<p>A statement that two expressions are equal in value</p> Signup and view all the answers

What does equivalent mean?

<p>Equal in value</p> Signup and view all the answers

What is an exponent?

<p>The number of times a number is multiplied by itself</p> Signup and view all the answers

Define expression.

<p>A group of terms and operators.</p> Signup and view all the answers

What is a factor?

<p>Numbers we can multiply together to get another number</p> Signup and view all the answers

What is a face in geometry?

<p>Any of the individual flat surfaces of a solid object</p> Signup and view all the answers

Greater than is represented by the symbol '>'.

<p>True (A)</p> Signup and view all the answers

Less than is represented by the symbol '<'.

<p>True (A)</p> Signup and view all the answers

Define horizontal.

<p>Going side-to-side, like the horizon</p> Signup and view all the answers

What is an inequality?

<p>Compares two values, showing if one is less than, greater than, or simply not equal to another value</p> Signup and view all the answers

What is an integer?

<p>Positive and negative whole numbers</p> Signup and view all the answers

What are like terms?

<p>Terms that have the same exponent to the same power.</p> Signup and view all the answers

What does mean refer to in statistics?

<p>Average</p> Signup and view all the answers

Define median.

<p>Middle number in a set of data</p> Signup and view all the answers

What is mode in statistics?

<p>Number that shows up the most in a set of data</p> Signup and view all the answers

Define biased sample.

<p>A sample drawn in a way that one or more parts of the population are favored over others</p> Signup and view all the answers

What is a multiple?

<p>The result of multiplying a number by an integer</p> Signup and view all the answers

What are nets in geometry?

<p>A two-dimensional model of a three-dimensional solid.</p> Signup and view all the answers

What is a number line?

<p>A diagram of numbers in order on a horizontal or vertical line.</p> Signup and view all the answers

Define numerator.

<p>The top number in a fraction</p> Signup and view all the answers

What does non-proportional mean?

<p>When the ratio of y/x is not constant</p> Signup and view all the answers

What is an ordered pair?

<p>Two numbers written in parentheses which show the position on a graph.</p> Signup and view all the answers

What is the origin in a graph?

<p>Where the x-axis and y-axis cross</p> Signup and view all the answers

What does parallel mean?

<p>Always the same distance apart and never touching</p> Signup and view all the answers

Define perimeter.

<p>Distance around the outside of a shape.</p> Signup and view all the answers

What does perpendicular mean?

<p>Lines that meet at right angles (90°).</p> Signup and view all the answers

Define prism.

<p>A solid object with two identical ends and flat sides.</p> Signup and view all the answers

What is a product in terms of multiplication?

<p>The answer when two or more values are multiplied together</p> Signup and view all the answers

Define a pyramid in geometry.

<p>A solid object with triangle sides, an apex, and a polygon base.</p> Signup and view all the answers

What is a quadrant?

<p>The four areas created by the x-axis and the y-axis on the coordinate plane.</p> Signup and view all the answers

What is a quartile?

<p>The values that divide a list of numbers into quarters.</p> Signup and view all the answers

What does quotient mean?

<p>The answer to a division problem.</p> Signup and view all the answers

What is range?

<p>The difference between the lowest and highest values</p> Signup and view all the answers

What is a rate?

<p>A ratio of quantities in different units.</p> Signup and view all the answers

What is substitution?

<p>Putting values in place of a variable.</p> Signup and view all the answers

What is the sum?

<p>The result of adding two or more numbers.</p> Signup and view all the answers

What is a term in math?

<p>A constant, variable, or a coefficient together with a variable.</p> Signup and view all the answers

What is a unit rate?

<p>A rate with a denominator of one</p> Signup and view all the answers

Define vertex in geometry.

<p>A point where two or more line segments meet.</p> Signup and view all the answers

What does vertical mean?

<p>Up and down.</p> Signup and view all the answers

What is the y-axis?

<p>The line on a graph that runs vertically (up-down) through zero.</p> Signup and view all the answers

What does the x-axis represent?

<p>The line on a graph that runs horizontally (left-right) through zero.</p> Signup and view all the answers

What is a straight angle?

<p>An angle that measures exactly 180°</p> Signup and view all the answers

Study Notes

Geometry Vocabulary

  • Vertical Angles: Formed by intersecting lines; they are congruent.
  • Complementary Angles: Two angles with a sum of 90 degrees.
  • Supplementary Angles: Two angles whose measures add up to 180 degrees.
  • Adjacent Angles: Share a common ray, positioned side by side.
  • Circumference: Total distance around a circle, calculated with the formula (C = Ï€d) or (C = 2Ï€r).
  • Radius: Distance from the center to the edge of a circle.
  • Diameter: Distance across a circle through the center.
  • Area of a Circle: Calculated using (A = Ï€r^2).

Measurement and Data

  • Range: Difference between the largest and smallest data points in a set.
  • Interquartile Range: Difference between the 3rd and 1st quartiles in a data set.
  • Mean: Average value of data points, found by summing all points and dividing by the total number.
  • Median: Middle value in a sorted data set.
  • Mode: Most frequently occurring number in a data set.
  • Surface Area: Total area covering a 3D figure.

Algebra and Operations

  • Rate of Change: Constant change in a given quantity.
  • Simplify: Reducing expressions to their simplest form.
  • Order of Operations: Follow PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction).
  • Distributive Property: (a(b + c) = ab + ac) illustrates multiplication across addition.
  • Inverse Operation: Operation that reverses another (e.g., addition vs. subtraction).
  • Variable: Symbol representing an unknown value in equations.

Probability and Ratios

  • Dependent Probability: Outcomes of two events where the first affects the second.
  • Independent Probability: Outcomes of two events where the first does not affect the second.
  • Percent: A ratio expressed as a fraction of 100; part-to-whole comparison.

Shape and Function Vocabulary

  • Composite Shape: A 2D shape formed from multiple basic geometric shapes.
  • Prism: A solid shape with parallel, congruent bases connected by rectangular faces.
  • Pyramid: A solid shape with a polygon base and triangular sides meeting at an apex.

Graphing and Coordinate Geometry

  • Coordinate Plane: Formed by the intersection of the x-axis (horizontal) and y-axis (vertical).
  • Ordered Pair: A pair of numbers (x, y) indicating a point's position on a graph.
  • Quadrant: One of the four sections in the coordinate plane.

Finance and Practical Applications

  • Sales Tax: A percentage added to the cost of goods purchased.
  • Tip: A percentage of the bill given as a reward for service, primarily in restaurants.
  • Simple Interest: A percentage of the principal amount over time.

Miscellaneous Terms

  • Absolute Value: The distance of a number from zero on the number line.
  • Integer: Whole numbers that can be positive, negative, or zero.
  • Difference: Result of subtracting one number from another.
  • Product: Result from multiplying two or more numbers.
  • Quotient: Result of dividing one number by another.

Shapes and Angles

  • Straight Angle: Measures exactly 180 degrees.
  • Perpendicular Lines: Lines meeting at right angles (90 degrees).
  • Parallel Lines: Lines that run the same distance apart and never converge.

These notes outline key concepts and definitions that are essential for understanding 7th-grade math vocabulary and related topics.

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Test your knowledge of essential 7th grade math vocabulary with these flashcards. Each card features a key term along with its definition, helping you enhance your understanding of important concepts. Perfect for students looking to improve their math terminology skills.

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