CBSE#!#Estimation of Large Numbers

__________ is used in estimation of iodine number of fats and oils .

Estimate the order of number of seconds in a century.

Optical fiber consists of large number of

Estimated number of genes in human being is

Estimate the sum 5, 290+17 , 986 by estimating the numbers to their nearest (i) hundreds (ii) thousands.

The species which are present in large numbers and have large size are called

Snakes are killed in large numbers because :

In a school, the ratio of the number of large classrooms to small classrooms is 3:4. If the number of small rooms is 20, then find the number of large rooms.