问题
解答题
用自己喜欢的方法计算
|
答案
(1)(
+1 3
)÷1 4
,1 24
=(
+1 3
)×24,1 4
=
×24+1 3
×24,1 4
=8+6,
=14;
(2)25×(
×40%)×9 7
,7 9
=(25×40%)×(
×9 7
),7 9
=10×1,
=10;
(3)
+5 8
+5 7
×2 5
,1 4
=
+5 8
+5 7
,1 10
=
+75 56
,1 10
=
;403 280
(4)
+(1-1 50
)+2 5
,3 20
=
+1 50
+3 5
,3 20
=
+31 50
,3 20
=
.77 100