Hello!
There are 7 days in one week. To find the number of days in 5 weeks, we multiply 7 by 5:
7x5=35
If each class sings 8 songs per day, we will need to multiply 8 by the number of days (35).
8x35= 280
Each class sings 280 songs in 5 weeks.
I hope this helps you! Have a great day!