30 以内加减法习题(959 题) 21-8= 6+19= 29-14= 21-3= 5+7= 27-5= 23+3= 1+12= 13-4= 10+11= 27-3= 6+7= 17+4= 19+8= 21-2= 10+14= 16+12= 19+4= 9+8= 19+9= 28-24= 27-26= 17-17= 22+7= 5+3= 8-5= 25+3= 24-9= 2+25= 10+15= 4+5= 1+1= 26-12= 28-28= 22-13= 15-15= 16-10= 29-17= 16+14= 4-0= 17-13= 6-1= 22-3= 2+14= 12-3= 7+11= 13-9= 18-16= 12-2= 3+4= 8+8= 17-8= 1+28= 16+4= 14+7= 14+10= 5+9= 4+17= 3+8= 8+10= 7+20= 18+3= 8+17= 7+6= 19-9= 2+26= 7+7= 22+2= 13-6= 4-2= 5+18= 25+4= 17-10= 6+1= 9-8= 14-4= 24+5= 17+10= 17-3= 21+6= 24-12= 19+11= 20-0= 15+4= 20-17= 28-2= 20+6= 0+12= 26-11= 27-18= 26+2= 28-12= 11+17= 12-8= 14+11= 3+27= 3+10= 27-11= 26-26= 5+23= 13+4= 16-6= 14+14= 6+17= 8-6= 29-22= 10-4= 0+17= 10-8= 22+0= 19+3= 4+3= 6-4= 14-3= 27-19= 9+18= 4+21= 25-7= 21-4= 22-19= 10+2= 8+2= 16-11= 19+0= 0+22= 10-1= 17-6= 10-10=