直接写得数。 0.125+ = 3.6× = 4.2+8= × = 15÷0.01= 6÷ = 0.32= ×9=

$\text{[math]}$

解方程未知容易

$\text{[math]}$ $\text{[math]}$ $\text{[math]}$

解方程未知容易

9× $\text{[math]}$ =	$\text{[math]}$ =	$\text{[math]}$ ×0.75=	$\text{[math]}$ ×16=
0.75+ $\text{[math]}$ =	$\text{[math]}$ ÷ $\text{[math]}$ =	$\text{[math]}$ ：（ )= $\text{[math]}$	$\text{[math]}$ ×5.6÷0.875=

口算与估算未知容易

$\text{[math]}$ × $\text{[math]}$ = $\text{[math]}$ ÷3= 0.16+ $\text{[math]}$ = 3.5× $\text{[math]}$ =

$\text{[math]}$ ×13÷ $\text{[math]}$ ×13= $\text{[math]}$ × $\text{[math]}$ = （）： $\text{[math]}$ =20

$\text{[math]}$ ×62.5%= $\text{[math]}$ + $\text{[math]}$ × $\text{[math]}$ = $\text{[math]}$ ÷75%÷ $\text{[math]}$ =

口算与估算常考题普通

6.4-3.32=	$\text{[math]}$ × $\text{[math]}$ =	$\text{[math]}$ + $\text{[math]}$ =	2.5×0.9×0.4=	9.6÷0.6=
0.3×0.4=	48×12.5%=	$\text{[math]}$ ×5.6=	2÷2%=	$\text{[math]}$ - $\text{[math]}$ =