43.58+12.36=
②21.65﹣8.9=
③20﹣3.98=
17.49+6.3= 20.6-16.8=
①67.73+39.67= ②★59-28.19=
36.8+45.8= 15﹣13.26=
56.7-6.691= 63.5+19.74= ※28.01-19.93=
12.5+3.79=
验算
30-18.26=
验算: