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神机妙算细又巧(16-18+112)÷1240.75×65+34×36-75%1110÷[56×(37-38)](12+13)÷56+310.

题目详情
神机妙算细又巧
1
6
-
1
8
+
1
12
)÷
1
24

0.75×65+
3
4
×36-75%  
1110÷[56×(
3
7
-
3
8
)]
1
2
+
1
3
)÷
5
6
+
3
10
▼优质解答
答案和解析
(1)(
1
6
-
1
8
+
1
12
)÷
1
24

=(
1
6
-
1
8
+
1
12
)×24
=
1
6
×24-
1
8
×24+
1
12
×24
=4-3+2
=3

(2)0.75×65+
3
4
×36-75%
=0.75×65+0.75×36-0.75
=0.75×(65+36-1)
=0.75×100
=75

(3)1110÷[56×(
3
7
-
3
8
)]
=1110÷[56×
3
7
-56×
3
8
]
=1110÷[24-21]
=1110÷3
=370

(4)(
1
2
+
1
3
)÷
5
6
+
3
10

=
5
6
÷
5
6
+
3
10

=1+
3
10

=1
3
10