问题 解答题
计算
(1)8.01+99×8.01
(2)125×(8+0.8+0.08+0.008)
(3)
1
2
+
1
4
+
1
8
+
1
16
+
1
32

(4)(0.4+
2
3
)÷(
5
6
-0.75)×0.5
(5)989898×999999÷10101÷111111.
答案

(1)8.01+99×8.01,

=(1+99)×8.01,

=100×8.01,

=801;

(2)125×(8+0.8+0.08+0.008),

=125×8+125×0.8+125×0.08+125×0.008,

=1000+100+10+1,

=1111;

(3)

1
2
+
1
4
+
1
8
+
1
16
+
1
32

=1-

1
2
+
1
2
-
1
4
+
1
4
-
1
8
+
1
8
-
1
16
+
1
16
-
1
32

=1-

1
32

=

31
32

(4)(0.4+

2
3
)÷(
5
6
-0.75)×0.5,

=(

2
5
+
2
3
)÷(
5
6
-
3
4
)×0.5,

=

16
15
÷
1
12
×
1
2

=

16
15
×12×
1
2

=

32
5

(5)989898×999999÷10101÷111111,

=(98×10101)×(9×111111)÷10101÷111111,

=(98×10101÷10101)×(9×111111÷111111),

=98×9,

=(100-2)×9,

=900-18,

=882.

问答题 简答题
单项选择题 A3/A4型题