试题与答案

计算下面各题. 13.5-(6.9+6.1)÷2.615×15÷32×31057

题型:解答题

题目:

计算下面各题.
13.5-(6.9+6.1)÷2.615×
1
5
÷
3
2
×
3
10
573+900÷36×15
1
4
+
4
5
)÷
7
4
+
7
15

答案:

(1)13.5-(6.9+6.1)÷2.6,

=13.5-13÷2.6,

=13.5-5,

=8.5;

(2)15×

1
5
÷
3
2
×
3
10

=3×

2
3
×
3
10

=2×

3
10

=

3
5

(3)573+900÷36×15,

=573+25×15,

=573+375,

=948;

(4)(

1
4
+
4
5
)÷
7
4
+
7
15

=

21
20
×
4
7
+
7
15

=

3
5
+
7
15

=

16
15

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