计算下面各题.(能够简便计算的要求简便计算)①730-240÷15×16②79×511+29×511③34+34×3④[1一(12-14)]×23.-数学
题文
计算下面各题.(能够简便计算的要求简便计算) ①730-240÷15×16 ②
③
④[1一(
|
答案
①730-240÷15×16, =730-16×16, =730-256, =474; ②
=(
=1×
=
③
=
=
=3; ④[1一(
=[1-
=
|
题文
计算下面各题.(能够简便计算的要求简便计算) ①730-240÷15×16 ②
③
④[1一(
|
答案
①730-240÷15×16, =730-16×16, =730-256, =474; ②
=(
=1×
=
③
=
=
=3; ④[1一(
=[1-
=
|