问题 解答题
怎样简便怎样算
2.65×101
(2.4×
5
8
+3.6÷
3
4
)×
12
7

5
8
×
11
10
+
3
8
÷
10
11

999
8
9
+99
8
9
+9
8
9
+
1
3
答案

(1)2.65×101,

=2.65×100+2.65,

=265+2.65,

=267.65;

(2)(2.4×

5
8
+3.6÷
3
4
)×
12
7

=(1.5+3.6×

4
3
)×
12
7

=(1.5+4.8)×

12
7

=6.3×

12
7

=10.8;

(3)

5
8
×
11
10
+
3
8
÷
10
11

=(

5
8
+
3
8
)×
11
10

=1×

11
10

=1

1
10

(4)999

8
9
+99
8
9
+9
8
9
+
1
3

=(999

8
9
+
1
9
)+(99
8
9
+
1
9
)+(9
8
9
+
1
9
),

=1000+100+10,

=1110.

单项选择题 A1/A2型题
选择题