Basic Arithmetic and Number Systems

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Questions and Answers

What is the primary goal when solving equations?

  • To graph the equation
  • To compare two expressions
  • To isolate the variable (correct)
  • To convert units

Which of the following best describes systems of equations?

  • Equations that can be graphed as parabolas
  • Inequalities comparing multiple expressions
  • Two or more equations with the same variables (correct)
  • An equation with one variable

Which measurement unit would you use to measure the volume of a liquid?

  • Grams
  • Seconds
  • Liters (correct)
  • Meters

What does the mean represent in measures of central tendency?

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

What is the Pythagorean theorem used for?

<p>Finding the length of a missing side in a right triangle (C)</p> Signup and view all the answers

What is the sum of 15 and 27?

<p>42 (D)</p> Signup and view all the answers

Which of these options represents distinguishing natural numbers?

<p>1, 2, 3, ... (D)</p> Signup and view all the answers

What does the distributive property state?

<p>Multiplying a number by a sum is the same as multiplying the number by each addend then adding the products. (A)</p> Signup and view all the answers

Which fraction is an example of an equivalent fraction for 1/2?

<p>3/6 (A)</p> Signup and view all the answers

What is the product of 5 and 8?

<p>40 (D)</p> Signup and view all the answers

Which of the following is a characteristic of irrational numbers?

<p>Cannot be expressed as a fraction of two integers. (C)</p> Signup and view all the answers

Which statement correctly applies the inverse property for addition?

<p>The sum of a number and its opposite is zero. (D)</p> Signup and view all the answers

What is the process for simplifying the fraction 8/12?

<p>Divide both the numerator and denominator by their greatest common factor. (A)</p> Signup and view all the answers

Flashcards

Addition

Combining two or more numbers to find their total. The result is called the sum.

Equation

A mathematical statement that shows two expressions are equal.

Subtraction

Finding the difference between two numbers. The result is called the difference .

Solving equations

Finding the value of the variable that makes the equation true.

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Inequality

A mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

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Multiplication

Repeated addition of a number. The result is called the product.

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Division

Splitting a number into equal parts. The result is called the quotient.

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Linear equation

An equation whose graph is a straight line.

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System of equations

Two or more equations with the same unknowns.

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Natural Numbers

Counting numbers: 1, 2, 3...

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Basic shapes

Fundamental geometric figures like triangles, circles, squares, rectangles.

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Whole Numbers

Numbers including zero and the counting numbers. (0,1,2,3...)

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Perimeter

The total distance around a two-dimensional shape.

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Integers

Whole numbers and their opposites.(..., -3, -2, -1, 0, 1, 2, 3, ...)

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Rational Numbers

Numbers that can be expressed as a fraction p/q where p and q are integers and q ≠ 0.

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Area

The amount of space inside a two-dimensional shape.

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Volume

The amount of space occupied by a three-dimensional object.

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Irrational Numbers

Numbers that cannot be expressed as a fraction of two integers.

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Real Numbers

The set of all rational and irrational numbers.

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Angle

The figure formed by two rays meeting at a common endpoint.

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Commutative Property

Changing the order of numbers in addition or multiplication does not change the result.

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Units of measurement

Standardized quantities for length, weight, volume, time, and temperature.

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Associative Property

Changing the grouping of numbers in addition or multiplication does not change the result.

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Collecting data

Gathering information for analysis.

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Measures of central tendency

Summary statistics like mean, median, and mode.

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Distributive Property

Multiplying a number by a sum is the same as multiplying the number by each addend and then adding the products.

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Identity Property

The sum of any number and zero is the number itself. The product of any number and one is the number itself.

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Probability

The likelihood of an event occurring.

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Inverse Property

The sum of a number and its opposite is zero. The product of a number and its reciprocal is one (except for zero).

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Descriptive statistics

Summarizing and describing data

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Inferential statistics

Drawing conclusions about a wider population

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Fractions

Represent parts of a whole with a numerator and a denominator.

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Equivalent Fractions

Fractions that represent the same portion of a whole.

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Problem Solving

A multi-step process for figuring out mathematical tasks.

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Significant Figures

The number of digits in a calculation reflecting precision

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Pythagorean Theorem

Relates the sides of a right triangle.

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Functions

Relationships between variables.

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Study Notes

Basic Arithmetic Operations

  • Addition: Combining two or more numbers to find their total. The sum is the result.
  • Subtraction: Finding the difference between two numbers. The result is the difference.
  • Multiplication: Repeated addition of a number. The product is the result.
  • Division: Splitting a number into equal parts. The quotient is the result.

Number Systems

  • Natural Numbers (counting numbers): 1, 2, 3, ...
  • Whole Numbers: 0, 1, 2, 3, ... (includes zero)
  • Integers: ..., -3, -2, -1, 0, 1, 2, 3, ... (includes negative numbers)
  • Rational Numbers: Numbers that can be expressed as a fraction p/q, where p and q are integers and q ≠ 0. Examples include 1/2, 3/4, -2/5.
  • Irrational Numbers: Numbers that cannot be expressed as a fraction of two integers. Examples include √2, Ï€.
  • Real Numbers: The set of all rational and irrational numbers.

Properties of Numbers

  • Commutative Property: Changing the order of numbers in addition or multiplication does not change the result.
  • Associative Property: Changing the grouping of numbers in addition or multiplication does not change the result.
  • Distributive Property: Multiplying a number by a sum is the same as multiplying the number by each addend and then adding the products.
  • Identity Property: The sum of any number and zero is the number itself. The product of any number and one is the number itself.
  • Inverse Property: The sum of a number and its opposite is zero. The product of a number and its reciprocal is one (except for zero which has no reciprocal).

Fractions

  • Fractions represent parts of a whole. A fraction has a numerator and a denominator.
  • Equivalent Fractions: Fractions that represent the same portion of a whole.
  • Simplifying Fractions: Reducing a fraction to its lowest terms by dividing the numerator and denominator by their greatest common factor (GCF).
  • Adding and Subtracting Fractions: Requires finding a common denominator.
  • Multiplying Fractions: Multiply the numerators and multiply the denominators.
  • Dividing Fractions: Multiply the first fraction by the reciprocal of the second fraction.

Decimals

  • Decimals represent parts of a whole using place value.
  • Converting between decimals and fractions.
  • Adding, Subtracting, Multiplying, and Dividing Decimals.

Exponents and Radicals

  • Exponents represent repeated multiplication.
  • Evaluating expressions involving exponents and radicals.

Algebra

  • Variables represent unknown quantities.
  • Equations express equality between two expressions.
  • Solving equations involves isolating the variable.
  • Inequalities compare two expressions using symbols like <, >, ≤, ≥.
  • Linear equations: Equations that can be graphed as straight lines.
  • Systems of equations: Two or more equations with the same variables.

Geometry

  • Basic shapes (triangles, circles, squares, rectangles).
  • Perimeter, area, and volume of common shapes.
  • Angles and their properties.
  • Lines and their properties.

Measurement

  • Units of measurement (length, weight, volume, time, temperature).
  • Converting between different units of measurement.

Data Analysis

  • Collecting data and organizing it in tables or graphs.
  • Measures of central tendency (mean, median, mode).
  • Measures of variability (range, standard deviation).
  • Interpreting data presented in graphs and tables.

Probability

  • Likelihood of events occurring.
  • Basic probability calculations.
  • Probability distributions.

Statistics

  • Collecting and analyzing numerical data.
  • Descriptive statistics summarize data (mean, median, etc).
  • Inferential statistics uses sample data to draw conclusions about a wider population.

Problem Solving

  • Steps for solving math problems.
  • Identifying unknowns, creating equations, solving equations, and verifying the results.

Special Topics

  • Significant figures/rounding
  • Pythagorean theorem
  • Functions

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