This is the 4561st most frequent French word.
maths
"Maths" is the French word for "mathematics."
Here, 'les maths' refers generally to the subject of mathematics as a field of study.
J'aime beaucoup les maths, surtout la géométrie.
I really enjoy math, especially geometry.
In this sentence, 'de maths' indicates the subject of the homework, specifying that it's related to mathematics activities.
Il est en train de faire ses devoirs de maths pour demain.
He is doing his math homework for tomorrow.
Here, 'de maths' is used to classify the teacher as someone who teaches mathematics.