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下面各题,怎样算简便就怎样算.
5
6
×11+
5
6

②120+290÷58×16
③(
2
3
-
2
5
)×(
1
8
+
1
12

9
8
÷[
3
4
-(
7
16
-
1
4
)].
人气:400 ℃ 时间:2020-05-24 22:30:57
解答
5
6
×11+
5
6

=(11+1)×
5
6

=12×
5
6

=10;
②120+290÷58×16,
=120+290÷29÷2×16,
=120+5×16,
=120+80.
=200;
③(
2
3
-
2
5
)×(
1
8
+
1
12
),
=
4
15
×
5
24

=
1
18

9
8
÷[
3
4
-(
7
16
-
1
4
)],
=
9
8
÷[
3
4
+
1
4
-
7
16
],
=
9
8
÷[1-
7
16
],
=
9
8
÷
9
16

=
9
8
×
16
9

=2.
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