20 以内的连加连减计算 2+6+2= 10-8+3= 16+2-2= 8+6-4= 5+3+2= 7+8-4= 9+4-3= 16-5-1= 4+0+3= 5+8-3= 11-0+7= 9-0+5= 10-3-7= 2+3+7= 4+1+4= 4-2+9= 9-3-6= 9+7-6= 8+6+4= 14-4+1= 10-1-4= 7-4+7= 8+9-6= 6-2+8= 7-2+4= 8+1+6= 9-1+7= 8+4-10= 8+2-6= 11-1+5= 7+8-5= 6+9-5= 10-4+3= 7-4+8= 4+1+6= 4+11-4= 3+6-8= 8-3+8= 8+8-8= 7-0+6= 8-7+16= 9+9-7= 11+7-7= 9-8+6= 6+10-5= 8+7-5= 8-2+8= 9+2+4= 19-4-5= 6-2+7= 19-4-4= 4+8+3= 20 以内的连加连减计算 5+9-10= 11+5-6= 7+9-8= 7+3-8= 2-1+12= 5-3+9= 18-12-3= 15-14-1= 9+8-7= 3+5+2= 4+9-6= 11+5-6= 18-3-5= 7-4-2= 16-12-4= 17-15+6= 9+4-3= 8+3-1= 12-1+3= 14-4+3= 15+0-3= 8-8+4= 13-12+7= 8+8-9= 9-8+6= 19-9+5= 6+9+2= 15-6+2= 9-3+6= 9-6+3= 12-10+4= 12+5-9= 6-4+9= 17-10-4= 14+4-1= 10-8+9= 5+9-1= 6+6+7= 18-3-1= 11-2+3= 0+2+8= 16-10+9= 2+8+5= 12-3+4= 15-3-2= 4+6-8= 17-13+4= 16-7-3= 12+2-1= 12-10+2= 17-4+