在一块近似平行四边形的菜地里种萝卜，平均9平方分米种一棵，平均每棵收萝卜0.75千克。这块地的底30米，高18米，可收萝卜多少千克？
计算﹣ × ÷ ÷ +﹣ ÷90% ﹣12.5% 48%× 25%÷．
直接写得数﹣= 8×= ÷= 3.5= ×= ×6=
口算我最棒!÷3= ﹣= 8÷= ×8= 30×50%=0.25×29×4= 6÷120%= 1﹣97%=
+= 8÷= ×=3÷= 4×= =÷= = =
直接写出得数．﹣= ×= ÷6= 1﹣10%=÷= ÷= 1÷20%= +=×= 20×90%=
﹣
×
÷
÷
+
﹣
÷90% 
﹣12.5% 48%×
．
﹣
= 8×
= 
÷
= 3.5
= 
×
= 
×6=
÷3= 
﹣
= 8÷
×8= 30×50%=
+
= 8÷
= 
×
=
= 4×
= 
=
÷
= 
= 
=
﹣
= 
×
= 
÷6= 1﹣10%=
÷
= 
÷
= 1÷20%= 
+
=
×
= 20×90%=
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