There is only one number and so it, 0.4, must be the smallest.
64.0 is the smallest decimal
.001
0.001
.04
Decimal point zero four is not equal to decimal point four zero..04 = 4/100.40 = 4/10thus, .04 < .40
64.0 is the smallest decimal
0.0003 is the smallest decimal in this situation.
There is no smallest decimal - just as there is no largest number. If x was said to be the smallest decimal, inserting a zero immediately after the decimal point would give a number equal to a tenth of x - ie smaller than x.
There is no smallest decimal in the world because decimals can be infinitely small by adding more decimal places.
0.1 is the smallest positive number with 2 digits and a decimal point. without a decimal point the smallest is 10.
It is already a decimal that can also be expressed as 0.04
.001
0.001
0.08 is the smallest.
.04
.04
.04