题目内容

计算下面各题,能简算的必须简算
14.8-6.46-3.54
3
5
÷6×
10
7

7
9
+
5
6
-
1
4
)×72  
18
23
÷
8
5
+
18
23
×
3
8

1.25×6.9×8
13÷(
1
4
+
5
6
3
4
(1)14.8-6.46-3.54
=14.8-(6.46+3.54)
=14.8-10
=4.8;

(2)
3
5
÷6×
10
7

=
1
10
×
10
7

=
1
7


(3)(
7
9
+
5
6
-
1
4
)×72  
=
7
9
×72+
5
6
×72-
1
4
×72  
=56+60-18
=116-18
=98;

(4)
18
23
÷
8
5
+
18
23
×
3
8

=
18
23
×
5
8
+
18
23
×
3
8

=
18
23
×(
5
8
+
3
8

=
18
23
×1
=
18
23


(5)1.25×6.9×8
=1.25×8×6.9
=10×6.9
=69;

(6)13÷(
1
4
+
5
6
3
4

=13÷
13
12
×
3
4

=12×
3
4

=9.
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