8.NS.1-2 Number System Review
Flashcard
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Mathematics
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a rational number?
Back
A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.
2.
FLASHCARD QUESTION
Front
Is √25 a rational number?
Back
Yes, √25 = 5, which is a rational number.
3.
FLASHCARD QUESTION
Front
What is the approximate value of √40?
Back
√40 is approximately 6.32, which is between the whole numbers 6 and 7.
4.
FLASHCARD QUESTION
Front
Which of the following numbers is rational: 0, √81, or π?
Back
0 and √81 (which equals 9) are rational numbers; π is not a rational number.
5.
FLASHCARD QUESTION
Front
What is the area of a square if the side length is 13 feet?
Back
The area of a square is calculated as side length squared, so the area is 13² = 169 square feet.
6.
FLASHCARD QUESTION
Front
What is the side length of a square with an area of 169 square feet?
Back
The side length is 13 feet, since √169 = 13.
7.
FLASHCARD QUESTION
Front
What are the two consecutive whole numbers between which √50 lies?
Back
√50 is approximately 7.07, so it lies between 7 and 8.
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