Nope

Yehone betam mewedew astemariye endi yelen neber"it's only forbidden if you ask the teacher a permission to use it" and he is right. Zembeleh/sh yezeh/sh gebteh/sh ketetekemk/sh cheger yelewm letekem beleh setteyk new mitikelekelew

Mn denew yacheskew

For maths its not allowed gen chemistry lay chgere yelewem ena degmo ye bale watch calculator bihone arif nwe plus degmo ende fetagu memeher yewesenale kalkaebde menem ayelem

አረ ጣጣ የለውም ነበር maths ላይ ብቻ ነበር ክልክል ድሮ መዋዋስ ግን ክልክል ነው

No! It is strictly prohibited

yetemarkew chenkelatehen endetetekem enji calculator endetetekem aydelem,,,so ayefekedem