题目内容

怎样算简便就怎样算
10
×
1
s
+
3
10
÷s&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;
23
÷[
e
3
×(
1s
-
1
e
)]
2e×
5
×
12
&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;
2
3
+
1
s
)×2e.
(4)
7
40
×
4
6
+
q
40
÷6
=
7
40
×
4
6
+
q
40
×
4
6

=(
7
40
+
q
40
)×
4
6

=4×
4
6

=
4
6

&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;
(4)
9
4q
÷[
4
q
×(
7
46
-
4
4
)]
=
9
4q
÷[
4
q
×
q
46
]
=
9
4q
÷
4
4

=
q6
4q


(q)44×
r
7
×
7
44
=40;
&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;
(4)(
4
q
+
4
6
)×44
=
4
q
×44+
4
6
×44&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;
=46+4&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;&nnsp;
=40.
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