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用简便方法计算.(写出简算过程)(1)99×101(2)12×(14+16-13)(3)1316×511+516×311.

题目详情
用简便方法计算.(写出简算过程)
(1)99×101  
(2)12×(
1
4
+
1
6
-
1
3
) 
(3)
13
16
×
5
11
+
5
16
×
3
11
用简便方法计算.(写出简算过程)
(1)99×101   (2)12×(
1
4
+
1
6
-
1
3
) 
(3)
13
16
×
5
11
+
5
16
×
3
11
用简便方法计算.(写出简算过程)
(1)99×101  
(2)12×(
1
4
+
1
6
-
1
3
) 
1
4
+
1
6
-
1
3
) 
1
4
1144
1
6
-
1
3
) 
1
6
1166
1
3
) 
1
3
1133(3)
13
16
×
5
11
+
5
16
×
3
11
13
16
×
5
11
+
5
16
×
3
11
13
16
13131616
5
11
+
5
16
×
3
11
5
11
551111
5
16
×
3
11
5
16
551616
3
11
3
11
331111
▼优质解答
答案和解析
(1)99×101  
=99×(100+1)
=99×100+99×1
=9900+99
=9999;

(2)12×(
1
4
+
1
6
-
1
3
) 
=12×
1
4
+12×
1
6
-12×
1
3

=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
1
4
111444+
1
6
-
1
3
) 
=12×
1
4
+12×
1
6
-12×
1
3

=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
1
6
111666-
1
3
) 
=12×
1
4
+12×
1
6
-12×
1
3

=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
1
3
111333) 
=12×
1
4
+12×
1
6
-12×
1
3

=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
1
4
111444+12×
1
6
-12×
1
3

=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
1
6
111666-12×
1
3

=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
1
3
111333
=3+2-4
=1;

(3)
13
16
×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
13
16
131313161616×
5
11
+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
5
11
555111111+
5
16
×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
5
16
555161616×
3
11

=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
3
11
333111111
=
5
16
×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
5
16
555161616×
13
11
+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
13
11
131313111111+
5
16
×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
5
16
555161616×
3
11

=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
3
11
333111111
=
5
16
×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
5
16
555161616×(
13
11
+
3
11

=
5
16
×
16
11

=
5
11
13
11
131313111111+
3
11

=
5
16
×
16
11

=
5
11
3
11
333111111)
=
5
16
×
16
11

=
5
11
5
16
555161616×
16
11

=
5
11
16
11
161616111111
=
5
11
5
11
555111111.