350×0.02= 1﹣25%= 1+15%= 12﹣7.9=
×= ﹣= (﹣)×24= 16×=
131131÷131= ××0= 1÷﹣÷1= 12.5×0.08=
0.9+99×0.9= 7.8×0.25×4= ﹣+= 0.52×100=
×8+8×= ×21×= 98﹣0.23﹣0.77= +÷=
44÷= 9300÷5÷6= 0÷= 1997+1998+1999+6=
350×0.02= 1﹣25%= 1+15%= 12﹣7.9=
×= ﹣= (﹣)×24= 16×=
131131÷131= ××0= 1÷﹣÷1= 12.5×0.08=
0.9+99×0.9= 7.8×0.25×4= ﹣+= 0.52×100=
×8+8×= ×21×= 98﹣0.23﹣0.77= +÷=
44÷= 9300÷5÷6= 0÷= 1997+1998+1999+6=