直接写得数． ×2.8=0.75+=×=÷=÷60%=﹣×=120×=18××=【参考答案】

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直接写得数．

$\text{[math]}$ ×2.8=	0.75+ $\text{[math]}$ =	$\text{[math]}$ × $\text{[math]}$ =	$\text{[math]}$ ÷ $\text{[math]}$ =
$\text{[math]}$ ÷60%=	$\text{[math]}$ ﹣ $\text{[math]}$ × $\text{[math]}$ =	120× $\text{[math]}$ =	18× $\text{[math]}$ × $\text{[math]}$ =