Division of a unit in hundred equal parts
If an object is divided into 100 equal parts then its each part is one hundredth of the whole. It is written 

Let us look at some more place value tables.

Ex.1    Given the place value table, write the number in decimal form.

Ex.3    Write as fractions in lowest terms   (a) 2.34     (b) 0.342

Decimals in Measurement

Usage of decimals in money

Dealing with decimal numbers is certain, when dealing with money. In numerous situations, similar as when we have to convert paisa into rupee. Suppose we go to an original shop to buy 500 gm of turmeric, where, one kg of turmeric costs Rs. 51. So, how important Money should we hand over to the shopkeeper? We divide Rs. 51 by 2, which is equal to25.5. In order to hand over the exact quantum, we must understand what25.5 means in terms of rupees. Let us learn this with the help of a simple illustration.

1 Rs. = 100 paise
1 paise = 1/100 paise
1 paise = Rs. 0.01

Usage of decimals in length

While measuring the length of an item, it is not necessary that the length of an object is a multiple of the given scale. For illustration, while measuring the length of a table with a metre scale, the length may not be a whole number; it may lie between two ladders on the metre scale. In similar situations, the decimal numbers are used.

1metre = 100 cms
1 cm = 1/100 m
1cm = 0.01 m

Usage of decimals in weight

We use decimal numbers while dealing with weight. For illustration, when we are buying a watermelon, it can not always weigh in whole numbers; it can be lower than 2 kg but further than 1 kg. In similar situations, the shopkeeper has to calculate how important to charge for a watermelon, grounded on its weight

1kg = 1000 grams
gram = 1/1000 kgs
1 gram = 0.001 kgs