问题
解答题
|
答案
(1)
÷12 3
×1 2
,7 18
=
×4 9
,7 18
=
;14 81
(2)14
×21 7
×4,1 2
=
×(99 7
×4),5 2
=
×10,99 7
=
;990 7
(3)1÷
-9 11
÷1,9 11
=
-11 9
,9 11
=
;40 99
(4)1÷0.45×
,13 20
=
×20 9
,13 20
=
;13 9
(5)(
-1 2
+1 6
)×36,5 12
=
×36-1 2
×36+1 6
×36,5 12
=18-6+15,
=12+15
=27;
(6)2
×0.45×3.5,1 2
=1.125×3.5,
=3.9375.