小学一年级口算题:运算练习(十九) 72-2= 40-2= 46-9= 43-4= 18-2= 38-8= 35+5= 85+2= 59-4= 78+10= 82-5= 64+6= 32+7= 49-5= 63+3= 84-2= 60-4= 88-4= 11+20= 45-3= 30+8= 60-7= 25+4= 36-5=