The value of 1X 1 is:

The simplest rule of multiplication with decimal point:

1. Multiply the numbers without minding the decimal points.

2. After deriving the value,find out how many digits are there at the right side after the decimal points for every number you multiplied.

3. Place decimal point onto your derived value, equal to the sum of number of digits found in every number multiplied, counting from  from left to right.