340﹣160= 3.72+5.28= 3÷15= ×= 27×30%=
1.03﹣0.37﹣0.43= ÷×3= 0.1÷0.25÷0.4= ×(14+)= ×﹣=
204﹣78= 120×7= 960÷6=
3.8﹣2.98= + = ÷ =