问题 解答题
计算下列各题:
(1)
(-2)2
+
10
5
-
1
3
×
6

(2)
1
1+
2
+
1
2
+
3
+
1
3
+
4
+…+
1
99
+
100
答案

(1)原式=2+

10
5
-
1
3
×6

=2+

2
-
2

=2;

(2)原式=

1
2
+1
+
1
3
+
2
+
1
4
+
3
+…+
1
100
+
99

=

2
-1+
3
-
2
+
4
-
3
+…+
100
-
99

=

100
-1

=10-1

=9.

问答题 简答题
判断题