①6.54÷0.4÷2.5
②18.6÷0.6×2.3
③(4.2+1.32)÷0.8
④1.25×1.37×8
⑤2.5×6.3+3.7×2.5
⑥6.8-2.8÷14
340﹣160= 3.72+5.28= 3÷15= ×= 27×30%=
1.03﹣0.37﹣0.43= ÷×3= 0.1÷0.25÷0.4= ×(14+)= ×﹣=