3.14×4= 1.5×1.5=
1÷0.1= 0.52=
9÷ ×6= 7.8+3.22=
4:0.5= 25×4÷25×4=
0.0625+0.125+0.1875+0.25+0.3125+0.375+0.4375+0.5+0.5625+0.625+0.6875+0.75+0.8125+0.875+0.9375
①273﹣73﹣27
②1.25×9.78×80
③()×24
④[1﹣()]÷