7.6*10.2-3.8*0.
问题描述:
7.6*10.2-3.8*0.
答
7.6*10.2-3.8*0.4=3.8 ×(2*10.2-0.4) =3.8 ×( 20.4-0.4) =3.8 ×20 =76
7.6*10.2-3.8*0.
7.6*10.2-3.8*0.4=3.8 ×(2*10.2-0.4) =3.8 ×( 20.4-0.4) =3.8 ×20 =76