124×72=8928;
1 2 4
×
7 2
2 4 8
8 6 8 8 9 2 8
46×210=9660;
4 6
×
2 1 0
4 6
9 2 9 6 6 0
182×37=6734;
1 8 2
×
3 7
1 2 7 4
5 4 6 6 7 3 4
306×40=12240.
3 0 6
×
4 0
1 2 2 4 0
解答:解:124×72=8928;
1 2 4
×
7 2
.
2 4 8
8 6 8
8 9 2 8
46×210=9660;
4 6
×
2 1 0
.
4 6
9 2
9 6 6 0
182×37=6734;
1 8 2
×
3 7
.
1 2 7 4
5 4 6
6 7 3 4
306×40=12240.
3 0 6
×
4 0
.
1 2 2 4 0