Madrid had qualified for the tournament between the top teams on each continent in large part thanks to Bale, who scored twice in the 3-1 win over Liverpool in May’s Champions League final.
Madrid will next play host side Al Ain FC on Saturday, when the European champions will be heavily favored to claim a fourth club world title.
Wednesday’s game was a rematch of the 2016 final, when Madrid needed extra time to beat Kashima 4-2.
This time they had no trouble.
Kashima had a promising start as Serginho shot just wide and Gen Shoji almost reached a corner kick that would have left him with a pointblank header in the third minute.
Madrid, however, took control and started probing the right side as Bale’s speed proved too much to handle.
Bale’s second goal in the 53rd minute came after two horrible passes by Kashima defenders left their goalkeeper stranded and he added his third two minutes later after Marcelo found him alone in the box.
Bale was replaced by Marco Asensio, who later had to leave with an apparent leg injury.
Kashima’s Shoma Doi then closed the scoring with a goal in the 78th minute.
The match was interrupted in stoppage time when two fans ran onto the field toward Benzema and Marcelo. They were quickly removed by stadium security.
On Tuesday, Al Ain upset River Plate of Argentina on penalties.
Source: Fox Sports