题目内容

脱式计算
(384+336)÷15×13

(11+30.6)÷16+16.5
2-
5
4
×
8
15
-
1
3
〔1-(
1
6
+
1
4
)〕÷
7
10
(1)(384+336)÷15×13,
=720÷15×13,
=48×13,
=624;

(2)(11+30.6)÷16+16.5,
=41.6÷16+16.5,
=2.6+16.5,
=19.1;

(3)2-
5
4
×
8
15
-
1
3

=2-
2
3
-
1
3

=2-(
2
3
+
1
3
),
=2-1,
=2;

(4)[1-(
1
6
+
1
4
)]÷
7
10

=[1-
5
12
7
10

=
7
12
÷
7
10

=
5
6
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