Solution

25319

First name
Tilly and Eliza
School
St Michaels c of e
Country
Age
10

We multiplied 3.125 by 1, then 2, then 3 and so on until we found out that 8 x 3.125 = 25 which was a whole number. If 8 x 3.125 =25 then you can also do 25 divided by 8 is 3.125 the answer to the problem!