Here are the URL to different math websites!
https://www.thatquiz.org
https://www.mathgames.com/grade7
https://solveme.edc.org/Mobiles.html
www.futuristicmath.com/7th-grade-math-games.htm
www.mathchimp.com/7th-grade-math-games
https://mathgames4children.com/games-for-seventh-grade.html
This is the URL for PI websites!
https://www.mathgames.com/skill/7.1-circles-calculate-area-radius-circumference
www.quia.com/rr/281323.html
http://spikedmath.com/math-games/pi-games-(314).html