In this video, I will be explaining a super easy trick to multiply ANY number by 11, 111, and 1111. This is a very helpful and quick trick that saves a lot of time, so please subscribe to my channel for more tricks and tips!
#Mathtricks #EasyMath
Answers to the homework:
81 x 11 = 891
394 x 111 = 4334
715 x 111 = 7865
3720 x 1111 = 40920