（1）油菜籽的出油率是42%，2100千克油菜籽可榨油多少千克？（2）油菜籽的出油率是42%，一个榨油厂榨出菜油2100千克，用油菜籽多少千克？
直接写得数．×=×12=×=÷=÷= 9×=÷═÷12=
直接写得数．=== 3.2÷40%=====
直接写出得数．×=﹣= 0÷= 5÷= 70×=
计算 0.62=×= 4×60%= 0×=÷2= 10÷=×3.6= 0.875÷0.125=
找准对应．（12）
×
=
×12=
×
=
÷
=
÷
= 9×
=
÷
═
÷12=
=
=
=
=
=
=
=
×
=
﹣
= 0÷
=
= 70×
=
×
= 4×60%= 0×
=
÷2= 10÷
=
×3.6= 0.875÷0.125=
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