看谁算的又对又快．400×2= 9×300= 65×0= 105×4= 21÷8= + = + = ﹣ = 1﹣ = ﹣ =&nb

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400×2=	9×300=	65×0=	105×4=	21÷8=
$\text{[math]}$ + $\text{[math]}$ =	$\text{[math]}$ + $\text{[math]}$ =	$\text{[math]}$ ﹣ $\text{[math]}$ =	1﹣ $\text{[math]}$ =	$\text{[math]}$ ﹣ $\text{[math]}$ =

1. 看谁算的又对又快．400×2= 9×300= 65×0= 105×4= 21÷8= + = + = ﹣ = 1﹣ = ﹣ =