Digits : The symbols 0,1,2,3,4,5,6,7,8,9 used to write numbers are called digits.

Numbers : Numbers are formed with digits.

The place value of a digit increases as it moves to the left.

When a digit moves from a place to immediately preceding place, its value becomes ten times.

The place succeeding hundred’s place is tens place.

The place preceding thousand’s place is ten thousands place.

The smallest one digit number is 0.

The largest one digit number is 9.

The smallest two digit number is 10.

The largest two digit number is 99.

The smallest three digit number is 100.

The largest three digit number is 999.

The smallest four digit number is 1000.

The largest four digit number is 9999.

The smallest five digit number is 10000.

The largest five digit number is 99999.

The smallest six digit number is 100000.

The largest six digit number is 999999.