В. ) 3- 2 7/10 G.) 40: 5/8
3 - 2 7/10 = 2 10/10 - 2 7/10 = 3/10 40 : 5/8 = ( 40•8 )/5 = 8•8 = 64
B) 3 -2 7/10 =3 -27/10 =(30 -27)/10 =3/10 =0.3 G) 40 : 5/8 =40 *8/5 =8*8 =64