问题
解答题
看谁算得对
|
答案
(1)(
+4 5
)÷1 4
+3 7
,7 10
=
÷21 20
+3 7
,7 10
=
+49 20
,7 10
=
;63 20
(2)300+2484÷23×25,
=300+108×25,
=300+2700,
=3000;
(3)
÷[1÷(1 6
-3 5
)],3 10
=
÷[1÷1 6
],3 10
=
÷1 6
,10 3
=
.1 20