问题
解答题
|
答案
(1)3.8+3.17÷(22+9.7),
=3.8+3.17÷31.7,
=3.8+0.1,
=3.9;
(2)68÷[0.5×(7.5-0.7)],
=68÷[0.5×6.8],
=68÷3.4,
=20;
(3)352-162÷36×24,
=352-4.5×24,
=352-108,
=244;
(4)[
-(5 6
-5 14
)]×2 7
,7 18
=[
-5 6
]×1 14
,7 18
=
×5 6
-7 18
×1 14
,7 18
=
-35 108
,7 36
=
,14 108
=
;7 54
(5)(
+1 3
+1 6
)÷1 9
,1 36
=(
+1 3
+1 6
)×36,1 9
=
×36+1 3
×36+1 6
×36,1 9
=12+6+4,
=22;
(6)
×[1 8
÷(1 2
×3 5
)],10 9
=
×[1 8
÷1 2
],2 3
=
×1 8
,3 4
=
.3 32