==================CORRECTIONS====================

     Hello, I'm Rana! I like Math class. I took a Math exam on Saturday. I also
like English. I like studying. I go to school on Monday. I go by
car.

Rana: Helle, I Rana!
Correct: Hello, I'm Rana!
Explanation: I'm is the contracted word for I am. We use I am when we are
talking about ourselves.

Rana: I like math class.
Correct: I like Math class.
Explanation: We write the capital letter of the word Math because it is a  
proper noun. Its common noun is subject. When we put names to subjects,
they become proper nouns, such as the subjects, English, Science and Math.

Rana: I go to math exam on Saterday.
Correct:  I took a Math exam on Saturday.
Explanation: We use the word took as the past tense of take. We use the
past tense because you already did it last Saturday. We don't use the word
go in this sentence because go is used for places.

Rana: Helle, I Rana! I Iike English.
Correct: I also like English.
Explanation: In this sentence, we won't put the introduction anymore
because we already put it at the beginning of our essay. We add the word
also which means, in addition. You mentioned that you like Math. So in
writing that you like English, we put the word also.

Rana:  I Iike study.
Correct: I like studying.
Explanation: In this sentence, we add -ing to the verb. We use the
progressive form of the word because it is a continuing action.

Rana: I to school on Monday
Correct: I go to school on Monday.
Explanation: In this sentence, it lacks a verb. We use the word go to indicate a verb in its simple form.

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Hello, Rana! Thank you for passing your homework! Good job in making
those sentences. Kindly read the corrections and study them. If you have
any questions, feel free to ask me in our class. Thank you! have a good
night!