Podcast
Questions and Answers
Which of the following is an example of the identity property of multiplication?
Which of the following is an example of the identity property of multiplication?
- 3 * 4 = 4 * 3
- 7 * 1 = 7 (correct)
- 2 + 0 = 2
- 5 * 0 = 0
Which of the following correctly describes an irrational number?
Which of the following correctly describes an irrational number?
- A number that can be written as a fraction.
- A number that can be expressed as a decimal that repeats or goes on forever without repeating. (correct)
- A number that is not a real number.
- A number that can be expressed as a decimal that terminates.
What is the multiplicative inverse of 5?
What is the multiplicative inverse of 5?
- 5
- 1
- 1/5 (correct)
- 0
Which of the following properties is demonstrated by the equation: 2 + (3 + 4) = (2 + 3) + 4 ?
Which of the following properties is demonstrated by the equation: 2 + (3 + 4) = (2 + 3) + 4 ?
Which of the following numbers belongs to the set of natural numbers?
Which of the following numbers belongs to the set of natural numbers?
What is the value of $x$ in the equation $x + 3 = 3$ ?
What is the value of $x$ in the equation $x + 3 = 3$ ?
Which of the following is an example of the distributive property?
Which of the following is an example of the distributive property?
Which of the following numbers is a rational number but not an integer?
Which of the following numbers is a rational number but not an integer?
What is the multiplicative inverse of $-1/2$?
What is the multiplicative inverse of $-1/2$?
Given that $a = b$ and $b = 5$, which of the following is true based on the transitive property?
Given that $a = b$ and $b = 5$, which of the following is true based on the transitive property?
Flashcards
Rational Numbers
Rational Numbers
Numbers that can be expressed as fractions.
Irrational Numbers
Irrational Numbers
Numbers that can’t be expressed as fractions.
Identity Property of Addition
Identity Property of Addition
a + 0 = a and 0 + a = a, keeps a number unchanged.
Commutative Property
Commutative Property
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Multiplicative Inverse
Multiplicative Inverse
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Study Notes
Number Systems
- Natural Numbers (N): Positive whole numbers (1, 2, 3, etc.)
- Whole Numbers (W): Includes zero and all natural numbers (0, 1, 2, 3, etc.)
- Integers (Z): Positive and negative whole numbers, including zero (-3, -2, -1, 0, 1, 2, 3, etc.)
- Rational Numbers (Q): Numbers that can be expressed as fractions (p/q, where p and q are integers and q ≠0). Any number that ends is a rational number.
- Irrational Numbers (I or Q-): Numbers that cannot be expressed as fractions. Irrational numbers are real numbers and exist on the number line.
Properties of Real Numbers
- Identity Property of Addition: Adding zero to any number results in the original number (a + 0 = a and 0 + a = a).
- Identity Property of Multiplication: Multiplying any number by one results in the original number (a × 1 = a and 1 × a = a).
- Commutative Property of Addition: The order of numbers in addition does not change the sum (a + b = b + a).
- Commutative Property of Multiplication: The order of numbers in multiplication does not change the product (a × b = b × a).
- Associative Property of Addition: Grouping numbers in addition does not change the sum [(a + b) + c = a + (b + c)].
- Associative Property of Multiplication: Grouping numbers in multiplication does not change the product [(a × b) × c = a × (b × c)].
- Distributive Property: Multiplying a number by the sum of two numbers is equivalent to multiplying the number by each addend and then adding the products [a × (b + c) = ab + ac and (b + c) × a = ab + ac].
- Multiplicative Inverse: The reciprocal of a number multiplied by the number equals one (a × 1/a = 1).
- Multiplication and Division Properties of Zero: Multiplying any number by zero results in zero (a × 0 = 0); dividing zero by any non-zero number results in zero (0/a = 0); dividing a non-zero number by zero is undefined (a/0 = undefined).
- Transitive Property: If a = b and b = c, then a = c.
- Symmetry Property: If a = b, then b = a.
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