问题
解答题
计算,能简便的要简便
|
答案
1)3-
-3 8
,5 8
=3-(
+3 8
),5 8
=3-1,
=2;
(2)
÷5 9
+1 18
÷5 9
,1 18
=(
+5 9
)×18,5 9
=
×18,10 9
=20;
(3)36×(
+7 9
)÷5 8
.29 5
=(36×
+36×7 9
)÷5 8
,29 5
=(28+22
)÷1 2
,29 5
=50
×1 2
,5 29
=
×101 2
,5 29
=
,505 58
=8
.41 58