Approximate Irrational Numbers

Flashcard
•
Mathematics
•
7th - 8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an irrational number?
Back
An irrational number is a number that cannot be expressed as a fraction of two integers. Its decimal representation is non-repeating and non-terminating.
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 the square root of 40 approximately between which two integers?
Back
The square root of 40 is approximately between 6 and 7.
4.
FLASHCARD QUESTION
Front
Which of the following is irrational: 0.444444444, -4/5, π, 0.2?
Back
π is an irrational number.
5.
FLASHCARD QUESTION
Front
Which number is rational: √20, √64, 6π, √7?
Back
√64 is a rational number because it equals 8.
6.
FLASHCARD QUESTION
Front
Is √7 rational or irrational?
Back
√7 is an irrational number.
7.
FLASHCARD QUESTION
Front
In between what two integers is the square root of 77?
Back
The square root of 77 is between 8 and 9.
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