竖式计算: 708×92 436×53 470×43 326×76.
10+2= 10+3=10+5= 3+10= 4+10= 6+10=
7-0= 6-1= 7-3= 8-5= 4-2= 9-7=
5+0= 10-2= 5-2= 7-3= 6-4= 8-4=
10-6= 8-6= 8-5= 8-3= 5-4= 5-1=
4+2= 7-4= 7-6 = 10-8= 10-3= 5+3=