Respuesta :

first you must multiply 12*309= 3,708 

for b. multiply 8 by 100=800, 8 by 10=80 then 8 by 8 which equals 64 

Then add 800+80+64=944 hope this helps :D
A. 12*309=
3708

B.8*100+8*10+8*8=
944