A simple example of a rational number suitable for Class 8 is 2/3.
Here's why:
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Definition of a Rational Number: A rational number is any number that can be expressed as a fraction p/q, where 'p' and 'q' are integers (whole numbers and their negatives) and 'q' is not zero.
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Why 2/3 is Rational: In the fraction 2/3, both 2 (p) and 3 (q) are integers, and 3 (q) is not zero. Therefore, it fits the definition perfectly.
Other examples that would be easily understood by Class 8 students include:
- 5: This can be written as 5/1.
- -4/7: A negative fraction is still a rational number.
- 0: This can be written as 0/1.
- 0.25: This can be written as 1/4 or 25/100. The key is that it can be converted to a fraction.
Rational numbers are fundamental in mathematics and crucial for understanding more advanced concepts. Understanding that integers and decimals that terminate or repeat can also be expressed as fractions helps solidify the concept.
