8006, nhầm
c, 8001.8.125 = 8001.(8.125)= 8001.1000= 8001000
d, 4.305.25= (4.25).305= 100.305= 30500
e, 8. (5+5)= 8.10= 80
a)* 32 . 125 = ( 16 . 5 ) . ( 2 . 5 ) . 5 = 80 . 10 . 5 = 800 . 5 = 4000
b)* 40. 25 = ( 20 . 5 ) . ( 2 . 5 ) = 100 . 10 = 1000
c) 8001. 8 . 125 = 8001 . 1000 = 8001000
d) 4. 305 . 25 = ( 4 . 25 ) . 305 = 100 . 305 = 30500
e) 8. 5 + 8 . 5 = ( 8 . 5 ) . 2 = 40 . 2 = 80