题目内容

简便计算:
10
11
×
1
13
×13×11;
2
5
+
3
10
)×
10
3

13
49
×21+28×
13
49

17
21
×
3
4
+
8
21
×
3
4
-
3
4

3
4
+
5
8
)×8×4;
34÷35×36;
8
11
×
7
25
+
7
11
×
3
25
10
11
×
1
13
×13×11,
=
10
11
×11×
1
13
×13

=10×1,
=10;
2
5
+
3
10
)×
10
3

=
2
5
×
10
3
+
3
10
×
10
3

=1
1
3
+
1,
=2
1
3

13
49
×21+28×
13
49

=(21+28)×
13
49

=49×
13
49

=13;
17
21
×
3
4
+
8
21
×
3
4
-
3
4

=(
17
21
+
8
21
-1)×
3
4

=
4
21
×
3
4

=
1
7

3
4
+
5
8
)×8×4,
=
3
4
×4×8+
5
8
×8×4

=24+20,
=44;
34÷35×36,
=
34
35
×
(35+1),
=
34
35
×35+
34
35
×1

=34+
34
35

=34
34
35

8
11
×
7
25
+
7
11
×
3
25

=
7
11
×
8
25
+
7
11
×
3
25

=
7
11
×(
8
25
+
3
25
)

=
7
11
×
11
25

=
7
25
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