Question

when we express decimal fractions without denominators using the decimal point then they are called ​

Answer 1

Answer:

A decimal fraction (or, a decimal number) is a fraction whose denominator is 10 or a higher power of 10.

Thus , etc. are all decimal fractions.

In order to express a given decimal fraction in shorter form, the denominator is not written ,but it’s absence is shown by a dot (called a decimal point) , inserted in a proper place.

Example: 

When there is no number to the left of the decimal point, generally, a zero is written, i.e, .72 is written as 0.72.

2.4 means (2+0.4). Here 2 is the integral part and 0.4 is the decimal part of the number 2.4.

Any extra zero (or zeroes) written after the decimal part of a number does not change it’s value.

Example: Value of 3.5 is the same as 3.50 or 3.500 or 3.5000 and so on.