用自己喜欢的方法计算.205-105×12÷451.05×(3.8-0.8)÷6.3(15+13)÷89(12+14)÷50%884÷34+17×213.75×(1.2-13)+34.-数学
题文
|
答案
①205-105×12÷45, =205-105×12÷45, =205-1260÷45, =205-28, =177; ②1.05×(3.8-0.8)÷6.3, =1.05×3÷6.3, =3.15÷6.3, =0.5; ③(
=(
=
=
=
④(
=(
|
题文
|
答案
①205-105×12÷45, =205-105×12÷45, =205-1260÷45, =205-28, =177; ②1.05×(3.8-0.8)÷6.3, =1.05×3÷6.3, =3.15÷6.3, =0.5; ③(
=(
=
=
=
④(
=(
|