*A fraction whose denominator is 10 or some positive integral power of 10 is called a decimal fraction.*

*Fraction having 10, 100, 1000,…. In the denominators are called Decimal Fractions.*

*Decimals:** *

*The numbers written in the decimal form are called decimal numbers or simply decimals*

*Ex: *

*4.1 is read four point one*

*12.05 is read twelve point zero five.*

*The decimal number(decimal) has two parts *

*whole number part and decimal part*

*These parts are separated by a dot(**.** **)** called decimal point*

*The parts to the right of the decimal point is called the decimal part of the number * *and the part to the left of the decimal point is called the integral part (whole number)*

*The digits in decimal part are read individually (including zero) with out naming the places.*

*The decimal part of the number is always less than one.*

*If there is no number in whole number part, it should be taken as zero ‘0’ *

*For example .7 can written as 0.7in 0.4 there is one decimal place.*

* *

*Decimal Places: *

* **The number of digits contained in the decimal part of a decimal gives the number of its decimal place.*

*Like decimals: *

*Decimals having the same number of decimal places are called like decimals*

*Ex: 25.02, and 4.83 are like decimals*

*Unlike Decimals:** *

*some given decimals all not having the same number of decimal places, are called unlike decimals.*

*Ex: 4.38 and 43.8 are unlike decimals.*

*Conversion of unlike decimals to like decimals:*

*The value of a decimal fraction is not changed by placing any number of zero’s at the end.*

*Ex : 4.2=4.20=4.2000*

*Annexing zeroes to the extreme right of the decimal part of a decimal does not change it value.*

*Out of given unlike decimals find the decimal which has the largest number of decimal places , say n*

*Convert each decimal into the one having decimal places by annexing the required number of zeroes to the extreme right of the decimal part. *

*Thus, all the given unlike decimals are converted to like decimals.*

*To express a decimal in the form of a common fractions, we remove the decimal point and write the resulting number as the numerator, place as many zeroes after 1 a there are places in the decimal part and write it as the denominator*