题目内容

列式计算.
12×(87+368÷16)
3-
3
2
×
10
21
-
2
7
6×18+4.4×18
8
9
×[
3
4
-(
15
16
-
3
4

(1)12×(87+368÷16)
=12×(87+23)
=12×110
=1320;

(2)3-
3
2
×
10
21
-
2
7

=3-
5
7
-
2
7

=3-(
5
7
+
2
7

=3-1
=2;


(3)6×18+4.4×18
=(6+4.4)×18
=10.4×18
=187.2;

(4)
8
9
×[
3
4
-(
15
16
-
3
4

=
8
9
×[
3
4
-
3
16
]
=
8
9
×
9
16

=
1
2
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