× × ××
×1 0.8×× ××
0.75:1= -×0= 0.75-25%=
7%×= 3.14×42=
①
②
③
④
⑤
⑥58×0.6+42×
<70 29> 46>
>39 74< >61
验算:
8.1÷0.03= +3= ×= ﹣=
×= 134﹣18= ×0÷3= 7.45+8.55=