# How can you tell if a number is rational

## How do you determine if a number is rational or irrational?

Answer: If a

**number can be written or can be converted to p/q form**, where p and q are integers and q is a non-zero number, then it is said to be rational and if it cannot be written in this form, then it is irrational.## How do you know if something’s a rational number?

**Any number that can be written as a fraction or a ratio**is a rational number. The product of any two rational numbers is therefore a rational number, because it too may be expressed as a fraction. For example, 5/7 and 13/120 are both rational numbers, and their product, 65/840, is also a rational number.

## What makes a number a rational number?

Rational Numbers:

**Any number that can be written as a ratio (or fraction) of two integers**is a rational number. … An integer can be written as a fraction by giving it a denominator of one, so any integer is a rational number.## How do you find a irrational number?

## Is 81 rational or irrational?

81 is a

**rational number**.## Is 0.6 a rational number?

0.6=

**610**as this can be written as a fraction it is a rational number.## What are the examples of rational numbers?

Any number that can be written as a fraction with integers is called a rational number . For example,

**17 and −34**are rational numbers. (Note that there is more than one way to write the same rational number as a ratio of integers. For example, 17 and 214 represent the same rational number.)## Is 0.8 a rational number?

Explanation: 0.8 can be expressed as the

**ratio of two integers**(namely 810 ) which is the definition of a rational number.## Is 25 a rational number?

The number

**25 is a rational number**. It is a whole number that can be written as the fraction 25/1. By definition, a rational number is the number…## Is 16 a rational number?

Sixteen is natural, whole, and an integer. Since it can also be written as the ratio 16:1 or the fraction 16/1, it is also

**a rational number**.## Is 9.5 a rational number?

Example: 9.5 can be written as a simple fraction like this:

**Irrational**? Irrational !

## Is 36 irrational or rational?

36 is

**a rational number**because it can be expressed as the quotient of two integers: 36 ÷ 1.## Is 1.25 a rational number?

**1.25 is a rational number**. A rational number is any number that can be written as a fraction.

## Is 2.5 a rational number?

The decimal

**2.5 is a rational number**. All decimals can be converted to fractions. The decimal 2.5 is equal to the fraction 25/10.## Is 48 a rational number?

48 is

**a rational number**because it can be expressed as the quotient of two integers: 48 ÷ 1.## Is sqrt36 a rational number?

**It’s rational**, and whole and integer.

## Is 64 irrational or rational?

Hence, the square root of 64 is a

…

Square Root of 64.

**rational number**.…

Square Root of 64.

1. | What Is the Square Root of 64? |
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6. | FAQs on Square Root of 64 |

## Is 121 irrational or rational?

121 is

**a rational number**because it can be expressed as the quotient of two integers: 121 ÷ 1.## Is 15 a rational number?

Explanation:

**15 is a rational number**because it can be expressed as a fraction (151or302,etc.)## Is the square root of 81 a rational number?

Is the Square Root of 81 Rational or Irrational? A rational number is defined as a number that can be expressed in the form of a quotient or division of two integers, i.e. p/q, where q is not

**equal**to 0. Both numbers can be represented in the form of a rational number. Hence, the square root of 81 is a rational number.## Is 3.14 a irrational number?

Pi, which begins with 3.14, is one of the

**most common irrational numbers**. … Pi has been calculated to over a quadrillion decimal places, but no pattern has ever been found; therefore it is an irrational number.