It is: 1/5 + 1/10 = 3/10
16
3.0
Assuming the question is about one fifth of a mile and not one fith mile, the answer is 880 yards.
It is: 3/10 or 0.3
1.20
Your question is not clear. You want to multiply 1.4 added to one tenth. What are you multiplying it by? It takes a minimum of two numbers to perform a multiplication. If I add one tenth to 1.4 the sum is 1.5 and after that, I could multiply it by something if there was something to multiply it by.
100 of them.
13.9
20
6.
2.