①×7+
②3.5×10.1
③×6×7×
④×[5-(+)]
⑤48×(+-)
=
0.9+1=
9.8÷9.8=
0.3÷0.5=
3.2×0.1=
5﹣0.97=
2.5×60%=
①100﹣600÷25×4
②20﹣ ﹣
③13× +5×
④[ ﹣( + )]÷
①3.9×2.5×4
② ÷[ ×( - )]
③ × + ÷