
Unit 1 Review Real Numbers
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are real numbers?
Back
Real numbers include all the numbers on the number line, including rational numbers (like integers and fractions) and irrational numbers (like √2 and π).
2.
FLASHCARD QUESTION
Front
What is a rational number?
Back
A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero.
3.
FLASHCARD QUESTION
Front
What is an irrational number?
Back
An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.
4.
FLASHCARD QUESTION
Front
What is the difference between integers and whole numbers?
Back
Whole numbers are non-negative integers (0, 1, 2, 3, ...), while integers include all whole numbers and their negative counterparts (..., -3, -2, -1, 0, 1, 2, 3, ...).
5.
FLASHCARD QUESTION
Front
What is the absolute value of a number?
Back
The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |−5| = 5 and |5| = 5.
6.
FLASHCARD QUESTION
Front
How do you add two rational numbers?
Back
To add two rational numbers, find a common denominator, convert the fractions, and then add the numerators.
7.
FLASHCARD QUESTION
Front
What is the decimal representation of 1/4?
Back
The decimal representation of 1/4 is 0.25.
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