一块平行四边形的地共收油菜籽3400kg,它的底长250m,高68m.平均每公顷收油菜籽多少千克?
直接写出得数3×= ×= ×18= ×= = ÷= ÷= 3×= .
直接写得数.= = = == = = =
12+9.9= 1÷0.25= ÷=×50%= ﹣= (0.75﹣)×96=
直接写得数.+= 6÷= ÷4= 2×=÷5= 24÷= ×= ÷=×24= ×= ÷= ×=
﹣= ÷12= 15×=36÷= += ×12=÷= ×=