问题 解答题
(1)9750÷25+75(2)(2.32+1.8)×6.5(3)101×7.8
(4)
5
8
×
8
15
+
3
4
÷
1
4
(5)
1
3
÷
[
3
4
-(
1
18
+
5
12
)].
答案

(1)9750÷25+75,

=390+75,

=465;

(2)(2.32+1.8)×6.5,

=4.12×6.5,

=26.78;

(3)101×7.8,

=(100+1)×7.8,

=100×7.8+1×7.8,

=780+7.8,

=787.8;

(4)

5
8
×
8
15
+
3
4
÷
1
4

=

1
3
+3,

=3

1
3

(5)

1
3
÷[
3
4
-(
1
18
+
5
12
)],

=

1
3
÷[
3
4
-
17
36
],

=

1
3
÷
5
18

=

6
5

名词解释
选择题