小学数学二年级上册计算题
78+23= 9+8= 8+55= 10+23= 32+12= 45+23= +28= 73+20= +20= 73+5= +2= 78+14= 78-26= 45-23= -= 68-21= 68-43= 65-34= 43-24= 87-34= 65-25= 63-12= 34-14= 85-51= 31-24= 58-43= 56+27= 25+23= 36+54= 57+24= 36+25= +27= 62+24= 34+25= 12+24= 31+42= 15+42= 34+15= 21+34= 62+15= 26+18= 12+30=
