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口算速算.7×314=23÷2=1−27=6÷37=56×12=14−16=815×56=514÷17=(35−35)×35=

题目详情
口算速算.
3
14
=
2
3
÷2=
1−
2
7
=
3
7
=
5
6
×12=
1
4
1
6
=
8
15
×
5
6
=
5
14
÷
1
7
=
(
3
5
3
5
3
5
=
口算速算.
3
14
=
2
3
÷2=
1−
2
7
=
3
7
=
5
6
×12=
1
4
1
6
=
8
15
×
5
6
=
5
14
÷
1
7
=
(
3
5
3
5
3
5
=
口算速算.
3
14
=
2
3
÷2=
1−
2
7
=
口算速算.
3
14
=

3
14
=
3
14
331414
2
3
÷2=
2
3
÷2=
2
3
22331−
2
7
=
1−
2
7
=
2
7
2277
3
7
=
5
6
×12=
1
4
1
6
=
3
7
=
3
7
=
3
7
3377
5
6
×12=
5
6
×12=
5
6
5566
1
4
1
6
=
1
4
1
6
=
1
4
1144
1
6
1166
8
15
×
5
6
=
5
14
÷
1
7
=
(
3
5
3
5
3
5
=
8
15
×
5
6
=
8
15
×
5
6
=
8
15
881515
5
6
5566
5
14
÷
1
7
=
5
14
÷
1
7
=
5
14
551414
1
7
1177(
3
5
3
5
3
5
=
(
3
5
3
5
3
5
=
3
5
3355
3
5
3355
3
5
3355
▼优质解答
答案和解析
3
14
=
3
2
2
3
÷2=
1
3
1−
2
7
=
5
7
3
7
=14
5
6
×12=10
1
4
1
6
=
1
12
8
15
×
5
6
=
4
9
5
14
÷
1
7
=
5
2
(
3
5
3
5
3
5
=0.
3
14
=
3
2
2
3
÷2=
1
3
1−
2
7
=
5
7
3
14
=
3
2
3
14
=
3
2
3
14
333141414=
3
2
3
2
333222
2
3
÷2=
1
3
2
3
÷2=
1
3
2
3
222333÷2=
1
3
1
3
111333 1−
2
7
=
5
7
1−
2
7
=
5
7
1−
2
7
222777=
5
7
5
7
555777
3
7
=14
5
6
×12=10
1
4
1
6
=
1
12
3
7
=14
3
7
=14
3
7
333777=14
5
6
×12=10
5
6
×12=10
5
6
555666×12=10
1
4
1
6
=
1
12
1
4
1
6
=
1
12
1
4
111444−
1
6
111666=
1
12
1
12
111121212
8
15
×
5
6
=
4
9
5
14
÷
1
7
=
5
2
(
3
5
3
5
3
5
=0.
8
15
×
5
6
=
4
9
8
15
×
5
6
=
4
9
8
15
888151515×
5
6
555666=
4
9
4
9
444999
5
14
÷
1
7
=
5
2
5
14
÷
1
7
=
5
2
5
14
555141414÷
1
7
111777=
5
2
5
2
555222 (
3
5
3
5
3
5
=0.
(
3
5
3
5
3
5
=0.
(
3
5
333555−
3
5
333555)×
3
5
333555=0.