floor exercise
US /ˈflɔːr ˌek.sər.saɪz/
UK /ˈflɔːr ˌek.sər.saɪz/

1.
a gymnastics event performed on a mat, involving tumbling, acrobatics, and dance movements
:
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She scored high on her floor exercise routine.
•
The gymnast performed a flawless floor exercise.