Doporučení iOS aplikace 速算练习 2.0

Na serveru Stahuj.cz je zajímavá iOS aplikace:

速算练习 2.0

Quick Calculate Gather speed calculation techniques commonly used to produce the corresponding topics students can practice and see help for quick calculation process. For example: Head same, tail complement,Formulas: the head by head, tail plus tail, tail by tail. Complement first , same…

Adresa: https://www.stahuj.cz/vzdelavani/su-suan-lian-xi/