(i) is a positive number and all positive numbers are greater than 0.

Therefore,

(ii) is a negative number and all negative numbers are less than 0.

Therefore,

(iii) Both and have the same denominator 4.

Therefore, we can directly compare both the numbers.

Since, 1 > -3

Therefore,

(iv) Both and have the same denominator 7.

Therefore, we can directly compare both the numbers.

Since, -4 > -5

Therefore,

(v) and have different denominators.

Therefore, we take LCM of 3 and 4 that is 12.

Now,

And,

Since, 9 > 8

Therefore,

Hence,

(vi) We can write

and have different denominators.

Therefore, we take LCM of 1 and 2 that is 2.

Now,

And,

Since, -1 > -2

Therefore,

Hence,