Abstrak
The increasing number of users networking social media TikTok among senior high school studentsin Indonesia,of course,will influence learning students, especially in terms of digital skills in mathematics. Counting is essential because students can count like that appearance so that they will later encounter a perceived problem that isdifficult in learning mathematics. This research aims to determinehow much influence TikTok social media users have against reasoning mathematics in students. This research adopts the quantitative experimental group control methodbefore and after the experiment was designed, and the sample in this study adopted the cluster random sampling method. Instruments usedfrom the paper The test consists of5 pre-tests and fivepost-testsin class X TB A SMKN 3 Metro. Data analysis uses the Paired Samples Statistics Test. The results of the research using paired samples statistics conclude that the application of TikTok is influential and significant to reasoning mathematics in students;theaverage pre-testscore is 45.88, and the average score post-test is 87.06. As such,it hasbeen proven that TikTok influencesreasoning mathematics in students.