一年级下册口算题大全:两位数减个位上的数! 85-5= 62-2= 37-7= 97-7= 52-2= 47-7= 41-1= 64-4= 87-7= 47-7= 24-4= 46-6= 22-2= 67-7= 54-4= 89-9= 76-6= 27-7= 98-8= 52-2=