① 208×15=
② 8.2-3.24=
345×27=
☆20-3.09=
445×18= 408×25=
350×60= 100-9.33=
43.8+56.29= 6.65-4.19=
230×47=
☆37.46+12.98=
验算:
12.66+40.34= 89×142= △30-0.325=
①28×407=
② 7.01-0.94=
③ 45×680=
25.56-2.556 15×208 8.42+5.8
(得数保留一位小数)