直接写得数。20.4-0.7=0.1+0.01=70.7÷35=1.6×(1.6-1.6)=0.25×2.3×4=

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20.4-0.7=	0.1+0.01=	70.7÷35=	1.6×(1.6-1.6)=
0.25×2.3×4=	$\text{[math]}$ - $\text{[math]}$ =	12×4÷12×4=	44÷ $\text{[math]}$ =

1. 直接写得数。20.4-0.7=0.1+0.01=70.7÷35=1.6×(1.6-1.6)=0.25×2.3×4= - =12×4÷12×4=44÷ =