脱式计算（能简算的要简算） ①1.25×32×25% ②24×（-+） ③×80%+÷1 ④34×÷× ⑤×-+ ⑥98×

$\text{[math]}$ ÷5=	12÷ $\text{[math]}$ =	$\text{[math]}$ × $\text{[math]}$ =	2.4× $\text{[math]}$ =
13÷ $\text{[math]}$ =	$\text{[math]}$ ÷ $\text{[math]}$ =	12× $\text{[math]}$ =	5× $\text{[math]}$ =

口算与估算未知容易

26×50=	12-0.86=	11- $\text{[math]}$ =	12-0.24÷6=
4÷ $\text{[math]}$ =	24×( $\text{[math]}$ )=	2.5×3.5×0.4=	96×0.4÷96×0.4=

口算与估算未知容易

$\text{[math]}$ ×0=	$\text{[math]}$ =	$\text{[math]}$ ×12=	$\text{[math]}$ =
$\text{[math]}$ =	$\text{[math]}$ ×100=	18× $\text{[math]}$ =	$\text{[math]}$ =