10以内加减法、填空题、比大小和应用题

第一题加减法2+2= 2+3= 4+5= 3+3= 3+4= 5+5= 7+2= 5+2= 6+3= 8+2= 9-2-4= 6-4-1 = 10-4-2= 9-2-1 = 7-2-1 = 9-7-2