Answer :
Whatever the ones with the most numbers within add 0 on the end so they have the same amount of numbers. E.g 8.09 to make it easier to your nephew change it to 8.090.
The answer is: 8.008, 8.08, 8.081, 8.09
I hope this helps!
so they all start with '8.0'so we can cross out that part and we are left with
8, 8.1, 9, 0.8
so 8.1 is more than 8 because it has '0.1' more than 8
9 is greater than 8
0.8 is less than all of them so
the order from smallest to greatest (when we put the 8.0 back in) is
8.008, 8.08, 8.081, 8.09
8, 8.1, 9, 0.8
so 8.1 is more than 8 because it has '0.1' more than 8
9 is greater than 8
0.8 is less than all of them so
the order from smallest to greatest (when we put the 8.0 back in) is
8.008, 8.08, 8.081, 8.09