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口算15+35=89-49=14+14=710-210=511+411=56-56=1-38=17+27+47=59-49+79=1-49-19=

题目详情
口算
1
5
+
3
5
=
8
9
-
4
9
=
1
4
+
1
4
=
7
10
-
2
10
=
5
11
+
4
11
=
5
6
-
5
6
=		1-
3
8
=
1
7
+
2
7
+
4
7
=
5
9
-
4
9
+
7
9
=		1-
4
9
-
1
9
=

1
5
+
3
5
=
8
9
-
4
9
=
1
4
+
1
4
=
7
10
-
2
10
=
5
11
+
4
11
=
5
6
-
5
6
=		1-
3
8
=
1
7
+
2
7
+
4
7
=
5
9
-
4
9
+
7
9
=		1-
4
9
-
1
9
=
1
5
+
3
5
=
8
9
-
4
9
=
1
4
+
1
4
=
7
10
-
2
10
=
5
11
+
4
11
=
5
6
-
5
6
=1-
3
8
=
1
7
+
2
7
+
4
7
=
5
9
-
4
9
+
7
9
=1-
4
9
-
1
9
=
1
5
+
3
5
=
8
9
-
4
9
=
1
4
+
1
4
=
7
10
-
2
10
=
5
11
+
4
11
=
1
5
+
3
5
=
1
5
+
3
5
=
1
5
151155
3
5
=
3
5
353355
8
9
-
4
9
=
8
9
-
4
9
=
8
9
898899
4
9
=
4
9
494499
1
4
+
1
4
=
1
4
+
1
4
=
1
4
141144
1
4
=
1
4
141144
7
10
-
2
10
=
7
10
-
2
10
=
7
10
710771010
2
10
=
2
10
210221010
5
11
+
4
11
=
5
11
+
4
11
=
5
11
511551111
4
11
=
4
11
411441111
5
6
-
5
6
=1-
3
8
=
1
7
+
2
7
+
4
7
=
5
9
-
4
9
+
7
9
=1-
4
9
-
1
9
=
5
6
-
5
6
=
5
6
-
5
6
=
5
6
565566
5
6
=
5
6
5655661-
3
8
=
3
8
=
3
8
383388
1
7
+
2
7
+
4
7
=
1
7
+
2
7
+
4
7
=
1
7
171177
2
7
+
4
7
=
2
7
272277
4
7
=
4
7
474477
5
9
-
4
9
+
7
9
=
5
9
-
4
9
+
7
9
=
5
9
595599
4
9
+
7
9
=
4
9
494499
7
9
=
7
9
7977991-
4
9
-
1
9
=
4
9
-
1
9
=
4
9
494499
1
9
=
1
9
191199
▼优质解答
答案和解析
1
5
+
3
5
=
4
5
8
9
-
4
9
=
4
9
1
4
+
1
4
=
1
2
7
10
-
2
10
=
1
2
5
11
+
4
11
=
9
11
5
6
-
5
6
=0		1-
3
8
=
5
8
1
7
+
2
7
+
4
7
=1
5
9
-
4
9
+
7
9
=
8
9
1-
4
9
-
1
9
=
4
9
1
5
+
3
5
=
4
5
8
9
-
4
9
=
4
9
1
4
+
1
4
=
1
2
7
10
-
2
10
=
1
2
5
11
+
4
11
=
9
11
5
6
-
5
6
=01-
3
8
=
5
8
1
7
+
2
7
+
4
7
=1
5
9
-
4
9
+
7
9
=
8
9
1-
4
9
-
1
9
=
4
9
1
5
+
3
5
=
4
5
8
9
-
4
9
=
4
9
1
4
+
1
4
=
1
2
7
10
-
2
10
=
1
2
5
11
+
4
11
=
9
11
1
5
+
3
5
=
4
5
1
5
+
3
5
=
4
5
1
5
15111555+
3
5
=
4
5
3
5
35333555=
4
5
4
5
45444555
8
9
-
4
9
=
4
9
8
9
-
4
9
=
4
9
8
9
89888999-
4
9
=
4
9
4
9
49444999=
4
9
4
9
49444999
1
4
+
1
4
=
1
2
1
4
+
1
4
=
1
2
1
4
14111444+
1
4
=
1
2
1
4
14111444=
1
2
1
2
12111222
7
10
-
2
10
=
1
2
7
10
-
2
10
=
1
2
7
10
710777101010-
2
10
=
1
2
2
10
210222101010=
1
2
1
2
12111222
5
11
+
4
11
=
9
11
5
11
+
4
11
=
9
11
5
11
511555111111+
4
11
=
9
11
4
11
411444111111=
9
11
9
11
911999111111
5
6
-
5
6
=01-
3
8
=
5
8
1
7
+
2
7
+
4
7
=1
5
9
-
4
9
+
7
9
=
8
9
1-
4
9
-
1
9
=
4
9
5
6
-
5
6
=0
5
6
-
5
6
=0
5
6
56555666-
5
6
=0
5
6
56555666=01-
3
8
=
5
8
1-
3
8
=
5
8
3
8
38333888=
5
8
5
8
58555888
1
7
+
2
7
+
4
7
=1
1
7
+
2
7
+
4
7
=1
1
7
17111777+
2
7
+
4
7
=1
2
7
27222777+
4
7
=1
4
7
47444777=1
5
9
-
4
9
+
7
9
=
8
9
5
9
-
4
9
+
7
9
=
8
9
5
9
59555999-
4
9
+
7
9
=
8
9
4
9
49444999+
7
9
=
8
9
7
9
79777999=
8
9
8
9
898889991-
4
9
-
1
9
=
4
9
1-
4
9
-
1
9
=
4
9
4
9
49444999-
1
9
=
4
9
1
9
19111999=
4
9
4
9
49444999
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