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口算.417×5=2539×1330=310×35=78×43=815×5=2.5×35=2.4×56=1.2×35=67÷3=43÷34=

题目详情
口算.
4
17
×5=
25
39
×
13
30
=
3
10
×
3
5
=
7
8
×
4
3
=
8
15
×5=
2.5×
3
5
=
2.4×
5
6
=
1.2×
3
5
=
6
7
÷3=
4
3
÷
3
4
=
▼优质解答
答案和解析

4
17
×5=
20
17
25
39
×
13
30
=
5
18
3
10
×
3
5
=
9
50
7
8
×
4
3
=
7
6
8
15
×5=
8
3
2.5×
3
5
=1.5
2.4×
5
6
=2
1.2×
3
5
=0.72
6
7
÷3=
2
7
4
3
÷
3
4
=
16
9