Extra work

Hello kids; this is an extra activity you can do at home if you want to practice everything related to areas. You must go to www.thatquiz.org and type the following codes depending on your grade.
5A: FFX1MSBC
5B: TO1DZQ1J
5C: 65QLOXTG
5D: 1KOMQ6FQ

Are you in or out of the system?
Good Luck!!