4+0.7x=102
①
②
③1.25×88+12.5×1.2
④
根据统计图填空。
1+0.09= 12.5×0.8= 80﹣80%= 0.43=
= 505÷10.1= = 48÷32=
3.2÷0.01= 5.6+3.99= ÷ =
× = 4.1+1÷2=