Here’s a brain teaser for you!

Answer: 

a) 6x8=48 (move a stick from number 8 which became 6 to zero which became eight)

b) 2x47 =94 (move a stick from number 8 which became 9 to on top of number 1 which became 7)

c) 5+1+2=8 (move a stick from 7 which became 1)