Solve pls brainliest

The answers are listed from left to right of the attachment.

1/5, 40%, 4/5, 80%

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )