直接写得数。4.9∶6.3=×=÷=××0=20÷=÷=÷=39××=

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4.9∶6.3=	$\text{[math]}$ × $\text{[math]}$ =	$\text{[math]}$ ÷ $\text{[math]}$ =	$\text{[math]}$ × $\text{[math]}$ ×0=
20÷ $\text{[math]}$ =	$\text{[math]}$ ÷ $\text{[math]}$ =	$\text{[math]}$ ÷ $\text{[math]}$ =	39× $\text{[math]}$ × $\text{[math]}$ =

1. (2023六上·河北期中) 直接写得数。4.9∶6.3=×=÷=××0=20÷=÷=÷=39××=