Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
引き出し ひきだし drawerjlpt4, uchi
~時 ~じ hour (of day)jlpt5, toki
台数学 だいすうがく algebraleda1, math
エー割るビー エーわるビー A ÷ Bmath
ばん (1)number (in a series), (2)(one's) turn, (3)watch, guard, lookout, (4)bout, match (sumo) jlpt3