口算 ÷5= + = × = 5÷ = ÷ = 4÷ =

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$\text{[math]}$ ÷5=	$\text{[math]}$ + $\text{[math]}$ =	$\text{[math]}$ × $\text{[math]}$ =	5÷ $\text{[math]}$ =
$\text{[math]}$ ÷ $\text{[math]}$ =	4÷ $\text{[math]}$ =	$\text{[math]}$ ﹣ $\text{[math]}$ =	0÷ $\text{[math]}$ =

1. 口算 ÷5= + = × = 5÷ = ÷ = 4÷ = ﹣ = 0÷ =