1NUMBER
A mathematical symbol represented by a set of digits is called a number.we can express a number in two, i.e., in words & in figures.e.g., if a number is 3290, then we can write this number in words as 'three thousand two hundred and ninety.'
DECIMAL SYSTEM
In our daily life, we use numbers everywhere for counting, for measuring weight, for measuring height, for scores of games etc. In the decimal system, we use ten symbols 0,1,2,3,4 5,6,7,8 and 9 which are called digits. Here, 0 is called the insignificant number, and the rest digits are called significant digit.
