identify the number as rational or irrational. explain 291.87
http://www.mathsisfun.com/irrational-numbers.html
What do you think?
Rational
is 291.87 rational or irrational
To determine whether the number 291.87 is rational or irrational, we need to understand the definition of rational and irrational numbers.
1. Rational numbers: A rational number is any number that can be expressed as a fraction where both the numerator and denominator are integers, and the denominator is not zero. In decimal form, a rational number either terminates or has a repeating pattern.
2. Irrational numbers: An irrational number is any number that cannot be expressed as a fraction of two integers. In decimal form, an irrational number neither terminates nor has a repeating pattern.
Now, let's examine the number 291.87:
1. The number 291.87 can be expressed as a fraction by considering the decimal places. Since there are two decimal places, the number can be written as 291.87/100.
2. Both 291.87 and 100 are integers.
3. Therefore, 291.87 can be expressed as the fraction 291.87/100, satisfying the definition of a rational number.
In conclusion, the number 291.87 is rational because it can be expressed as a fraction of two integers (291.87/100).