题目内容

下面各题怎样算简便就怎样算.
(1)36×
2
7
×
5
72
×42
(2)(
7
8
+
7
16
)÷
7
16
(3)
6
7
×
3
4
+
1
4
×
6
7
(4)
7
8
÷
2
3
÷
7
8
  
(5)
5
9
×8÷
7
9
(6)24×(
1
3
+
3
8
+
7
12
)
(1)36×
2
7
×
5
72
×42
=(36×
5
72
)×(
2
7
×42)
=
5
2
×12
=30;
(2)(
7
8
+
7
16
)÷
7
16

=
7
8
×
16
7
+
7
16
×
16
7

=2+1
=3;
(3)
6
7
×
3
4
+
1
4
×
6
7

=
6
7
×(
3
4
+
1
4

=
6
7
×1
=
6
7

(4)
7
8
÷
2
3
÷
7
8

=
7
8
÷
7
8
÷
2
3

=1÷
2
3

=1
1
2

(5)
5
9
×8÷
7
9

=
40
9
÷
7
9

=
40
7

=5
5
7

(6)24×(
1
3
+
3
8
+
7
12
)

=24×
1
3
+24×
3
8
+24×
7
12

=8+9+14
=31.
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