Is 19 Rational Or Irrational

Larn the departure between rational and irrational numbers, and picket a video about ratios and rates

Rational Numbers

A rational number is a number that can be written every bit a ratio. That means it can be written equally a fraction, in which both the numerator (the number on summit) and the denominator (the number on the bottom) are whole numbers.

The number 8 is a rational number because it tin exist written as the fraction 8/1.
Too, three/four is a rational number because it tin be written as a fraction.
Even a big, clunky fraction similar 7,324,908/56,003,492 is rational, simply because it tin be written as a fraction.

Every whole number is a rational number, because any whole number can be written every bit a fraction. For example, 4 can exist written as 4/1, 65 tin exist written as 65/1, and three,867 tin be written as 3,867/1.

Ratio and Rates: A Video

Watch this video to better understand the relationship betwixt 2 numbers—a ratio—and a particular kind of ratio involving time, which is called a rate.

Irrational Numbers

All numbers that are not rational are considered irrational. An irrational number can be written every bit a decimal, just non as a fraction.

An irrational number has endless non-repeating digits to the correct of the decimal point. Here are some irrational numbers:

= 3.141592…

$square root of 2$ = i.414213…

Although irrational numbers are not ofttimes used in dily life, they do exist on the number line. In fact, between 0 and ane on the number line, in that location are an space number of irrational numbers!