Four hundred nine and one-tenth as a decimal?
Any number is converted to a decimal by writing the integer part
on the left side of the decimal point and the fractional part on
the right side of the decimal point. The first place on the left
side of the decimal point is called the ten's. After that, we have
the hundred's, thousand's, ten-thousands, etc. On the right hand
side of the decimal point, we have the tenth's, hundredth's,
thousandth's, ten thousandth's, etc. So four hundred nine and
one-tenth is 409.1.