: Features 42 free, ad-free tests covering sets, geometry, and divisibility. You can earn a certificate if you score over 90%.
If you are looking for more rigorous "Russian Math" style problems or specific papers for download: testy po matematiki v 6 klasse onlain
: Provides free online tests and simulators specifically designed for 6th-grade students to prepare for exams and Olympiads. : Features 42 free, ad-free tests covering sets,
: Uses an intelligent algorithm to adjust difficulty based on your performance, helping to identify and bridge knowledge gaps. : Features 42 free