Today's number is ninety ٩٠ pronounced "Tis-æn" تسعين

Today's number is ninety ٩٠ 
Ninety ٩٠ is pronounced "Tis-æn" تسعي
Remember that the suffix "ty" (four-ty, fif-ty, etc)
is to tens in english as "æn" ين is in arabic.

Yesterday's number was eighty ٨٠
pronounced "Taman-æn" ثمانين

Today's number is ninety ٩٠
pronounced "Tis-æn" تسعين

Tomorrow's number is one hundred ١٠٠
pronounced "Mi-yæ" مية