问题
解答题
用递等式计算.
|
答案
(1)1292+540÷18×24,
=1292+30×24,
=1292+720,
=2012;
(2)1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
(3)
÷[9 20
×(1 2
+2 5
)],4 5
=
÷[9 20
×1 2
],6 5
=
÷9 20
,3 5
=
;3 4
(4)[1-(
+1 4
)]÷3 8
,15 16
=[1-
]÷5 8
,15 16
=
÷3 8
,15 16
=
.2 5