19+45= 28+56= 23+27= 67+18= 79+9= 38+37= 42+48= 89+8= 78+19= 45+17= 59+16= 60+11= 87+34= 77+6= 88+8= 列竖式计算 75+18= 51+19= 19+18= 67+26= 58+39= 45+27= 44+39= 26+38= 77+17= 55+37= 66+16= 83+9= 55+45= 75+15= 82+8= 32-18= 89-19= 93-7= 11-7= 78-19= 83-28= 45-39= 55-49= 61-19= 72-35= 93-8= 84-56= 32-19= 24-19= 54-18= 71-22= 83-58= 85-17= 75-48= 95-78= 84-67= 56-29= 56-48= 67-59= 72-37= 67-28= 72-27= 26-19= 70-57= 22-15= 本文来源:https://www.wddqw.com/doc/557c7a35a46e58fafab069dc5022aaea998f41e1.html