It's all right with me :)
No
yes it is
No, it is not correct to say "one an." The correct phrase is "one and a half day" to refer to one full day and half of another day.
It is correct to day "he divided the cake in half". The alternative is to add a word and say "he divided the cake into halves".
Sure.
Yes.
No, "school of fishes" is not the correct way to refer to a group of the same type of fish. The correct way to say that is "school of fish" since the plural of fish is fish.
Only if you mean " three different kinds of fish." Normally the plural of fish is fish.
Scientists have named and classified about 22,000 kinds of fish. But they also say that is only half of then.
Either one is correct; the meaning is the same.
yeah its better to be half hungry than fully hungry
24 kilograms. I say this because 8kg plus half a block is a whole block. The half a block has to be also 8 kg making a whole block weigh 16 kg. Now 1 block (16kg) plus half a block (8kg) added together is 24kg
That depends on what you mean to say. For example, if you have one angel fish in the tank you could say "That's the fish's tank" meaning that is the tank for the angel fish. If you also had a couple of clown fish, you could refer to the tank as belonging to all three fish by saying "That's the fishes' tank." Slightly different spelling and punctuation