小学一年级数学上册口算题
一年级口算竞赛题班级____姓名______成绩_____8 - 6 =5 + 4 =9 - 9 =2 + 15 =4 + 3 + 6 = 2 + 5 =10 - 7 =4 + 3 =9 +