Which number is one fourth the way between 2 and 10.4

First of all you need to work out the difference:
10.4 -2 = 8.4

Then you divide the difference by 4:
8.4/4 = 2.1

Then you add the divided difference to the smallest number:
2 + 2.1 = 4.1

The answer is 4.1,
Hope this helps! :)

10.4 - 2 = 8.4
1/4(8.4) = 2.12 + 2.1 = 4.1 <==

The answer is 1 because you have to flip the sign when dividing by negative number and 3