The word mga makes the word after it become plural.

mga tula

mga tanga

mga sapatos

It is not always necessary to put mga before a word to make it plural. This is especially the case when the number is understood from the context.

Maghugas ka ng paa.
Wash your feet.

Kumakain ka ba ng itlog?
Do you eat eggs?

Maraming tao dito.
There are a lot of people here.

about, approximately

mga sampu
around ten

mga alas dos
around two o’clock

Mga is a shortened form of manga, a spelling no longer used.

Misspelings and typos: mnga, mngaa