问题
解答题
简便运算. 6×
[
|
答案
(1)6×
+6.4÷5 8
-8 5 5 8
=6×
+6.4×5 8
-5 8 5 8
=(6+6.4-1)×5 8
=11.4×5 8
=
×57 5 5 8
=71 8
(2)[
-(5 6
-3 4
)]×1 2 9 8
=[
-5 6
]×1 4 9 8
=
×7 12 9 8
=21 32
简便运算. 6×
[
|
(1)6×
+6.4÷5 8
-8 5 5 8
=6×
+6.4×5 8
-5 8 5 8
=(6+6.4-1)×5 8
=11.4×5 8
=
×57 5 5 8
=71 8
(2)[
-(5 6
-3 4
)]×1 2 9 8
=[
-5 6
]×1 4 9 8
=
×7 12 9 8
=21 32