问题
解答题
计算下面各题: (1)
(2)
|
答案
(1)
+(15 16
-0.25)÷7 16 1 2
=
+(15 16
-7 16
)×2,4 16
=
+15 16
×2,3 16
=
+15 16
,6 16
=
;21 16
(2)
÷[4-(3.2×7 10
+5 8
)].4 5
=
÷[4-(2+0.8)],7 10
=
÷[4-2.8],7 10
=
÷7 10
,6 5
=
.7 12