answersLogoWhite

0

A rational number is one that can be expressed as ratio(or fraction) of two integers: given integers a & b (with b ≠ 0), then the fraction a / b (or a ÷ b) will be a rational number. We need to specify that b not equal to zero, as division by zero is not defined (well not for most math applications).

So Irrational Numbers such as pi, e, and square root of 2: cannot in any way be resolved into a fraction of two integers. All rational numbers can. Examples are:

  • 0 is rational, let a = 0, b = 1, or any other non-zero integer: 0/1 = 0
  • Whole numbers are rational: 1/1 = 1; 2/1 = 2; 100/25 = 4, etc.
  • Negative integers are also rational: (-4)/(2) = -2, or (20)/(-5) = -4
  • All fractions (proper and improper) which have integers in the numerator, and non-zero integer in denominator, as well as mixed numbers are rational {positive and negative} will be rational numbers.
User Avatar

Wiki User

12y ago

Still curious? Ask our experts.

Chat with our AI personalities

JudyJudy
Simplicity is my specialty.
Chat with Judy
MaxineMaxine
I respect you enough to keep it real.
Chat with Maxine
ReneRene
Change my mind. I dare you.
Chat with Rene
More answers

All whole numbers and fractions are rational numbers because irrational numbers can't be expressed as whole numbers or fractions.

User Avatar

Wiki User

7y ago
User Avatar

Add your answer:

Earn +20 pts
Q: What makes a number rational?
Write your answer...
Submit
Still have questions?
magnify glass
imp