问题 解答题
计算下面各题,能简算的要简算:
7.54+
12
7
+2.46+
16
7

0.4÷
15
4
+
2
5
×
4
15

3
23
÷(
6
7
-
5
6
×
3
10
)

99×
23
25
+
23
25
答案

7.54+

12
7
+2.46+
16
7

=(7.54+2.46)+(

12
7
+
16
7
),

=10+4,

=14;

0.4÷

15
4
+
2
5
×
4
15

=

2
5
×
4
15
+
2
5
×
4
15

=

2
5
×(
4
15
+
4
15
),

=

2
5
×
8
15

=

16
75

3
23
÷(
6
7
-
5
6
×
3
10
),

=

3
23
÷(
6
7
-
1
4
),

=

3
23
÷
17
28

=

84
391

99×

23
25
+
23
25

=(99+1)×

23
25

=100×

23
25

=92.

多选题
判断题