Označeno: računanje

Viri: https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.theschoolrun.com%2Fteacher-tricks-addition&psig=AOvVaw1HcdE1E3y5k89wono-40zj&ust=1616152567382000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCMix0tnbue8CFQAAAAAdAAAAABAD