问题
解答题
用递等式计算,能简算的要简算. 1÷﹙18.5-4.5×3﹚
|
答案
(1)1÷﹙18.5-4.5×3﹚,
=1÷﹙18.5-13.5﹚,
=1÷5,
=0.1;
(2)
÷6 7
-3 14
×6 5
,2 3
=4-
,4 5
=3
;1 5
(3)
×2 5
×40,3 8
=
×40,6 40
=6.
用递等式计算,能简算的要简算. 1÷﹙18.5-4.5×3﹚
|
(1)1÷﹙18.5-4.5×3﹚,
=1÷﹙18.5-13.5﹚,
=1÷5,
=0.1;
(2)
÷6 7
-3 14
×6 5
,2 3
=4-
,4 5
=3
;1 5
(3)
×2 5
×40,3 8
=
×40,6 40
=6.