问题 解答题
计算,能简算的要简算.
1
10
+
5
7
+
3
10
-
5
7

7
29
-
7
19
+
22
29
-
11
19

5
9
+(
3
4
-
1
2
11
12
-(
11
12
-
1
6
3
4
+(
11
18
-
5
12
2
3
+(
1
3
+
1
4
)+
3
4
答案

(1)

1
10
+
5
7
+
3
10
-
5
7

=(

1
10
+
3
10
)+(
5
7
-
5
7
),

=

2
5
+0,

=

2
5

(2)

7
29
-
7
19
+
22
29
-
11
19

=(

7
29
+
22
29
)-(
11
19
+
7
19
),

=1-

18
19

=

1
19

(3)

5
9
+(
3
4
-
1
2

=

5
9
+
1
4

=

29
36

(4)

11
12
-(
11
12
-
1
6

=

11
12
-
11
12
+
1
6

=

1
6

(5)

3
4
+(
11
18
-
5
12

=

3
4
+
7
36

=

17
18

(6)

2
3
+(
1
3
+
1
4
)+
3
4

=(

2
3
+
1
3
)+(
1
4
+
3
4
),

=1+1,

=2.

单项选择题
单项选择题