① []
②4.6+7.68﹣1+2.32
③1.25×2.5×0.4×8
④9.5×20%+
1.6×0.5=
0.8+2.2=
23=
+ =
× =
16÷ =
×4.2= 10.4﹣0.8= 44÷ = 0.11÷0.1=
÷ = 8.7÷29= × = 6×( ﹣ )=
①100﹣600÷25×4
②20﹣ ﹣
③13× +5×
④[ ﹣( + )]÷