Sólo voy a valorar el primer ejercicio

[ROBINDESBOIS]

How can I translate this?
I will only value/mark the first exercise.

[Rusty]

I'll only assess the first exercise.
I'll only look at/consider the first exercise.
Only the first exercise will count.

[ROBINDESBOIS]

I'll only assess the first exercise.
I'll only look at/consider the first exercise.
Only the first exercise will count.
I´ll only grade the 1st exercise?????

[Perikles]

I´ll only grade the 1st exercise?????That is AmE.

BrE is: I´ll only mark the 1st exercise