问题
解答题
计算下面各题: (1)540÷12×9+482 (2)
(3)(
(4)20÷[1-(
|
答案
(1)540÷12×9+482,
=45×9+482,
=405+482,
=887;
(2)
÷7 10
+1 5
×3 8
,2 3
=
×5+7 10
,1 4
=
+7 2
,1 4
=
;15 4
(3)(
-5 6
+1 4
)×24,5 12
=
×24-5 6
×24+1 4
×24,5 12
=20-6+10,
=24;
(4)20÷[1-(
+1 4
)],1 3
=20÷[1-
],7 12
=20÷
,5 12
=20×
,12 5
=48.