more about rational numbers
Answers
Step-by-step explanation:
In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.
hope it helps you!
A Rational Number can be made by dividing two integers.
(An integer is a number with no fractional part.)
Example:
1.5 is a rational number because 1.5 = 3/2 (3 and 2 are both integers)
Rational Number
Most numbers we use in everyday life are Rational Numbers.
Here are some more examples:
Number As a Fraction Rational?
5 5/1 Yes
1.75 7/4 Yes
.001 1/1000 Yes
−0.1 −1/10 Yes
0.111... 1/9 Yes
√2
(square root of 2) ? NO !
Oops! The square root of 2 cannot be written as a simple fraction! And there are many more such numbers, and because they are not rational they are called Irrational.
Another famous irrational number is Pi (π):
Rational Number
Formal Definition of Rational Number
More formally we say:
A rational number is a number that can be in the form p/q
where p and q are integers and q is not equal to zero.
So, a rational number can be:
p
q
Where q is not zero
Examples:
p q p / q =
1 1 1/1 1
1 2 1/2 0.5
55 100 55/100 0.55
1 1000 1/1000 0.001
253 10 253/10 25.3
7 0 7/0 No! "q" can't be zero!
Just remember: q can't be zero
Using Rational Numbers
add, subtract, multiply and divide
If a rational number is still in the form "p/q" it can be a little difficult to use, so I have a special page on how to: