一个长方体棱长之和是220cm，长与宽的比为2：1，宽与高的比为3：2，求长方体的体积．
直接写得数．×= ÷2= ×14= 10×=×2= ×= ÷= ÷=
直接写出得数×10= += 52×=9÷= ÷= 11﹣=0÷×= ﹣+= 1÷9×=
直接写出得数．= = = == = = == = = == = = == = = == = = ==
直接填得数×= ×= 16×= ÷= 1÷=÷= 9÷= ÷33= 1﹣25%= 75%+0.25=÷= ﹣=
直接写出得数． =80%= 1÷10%= 74×4×25%= ×15%=
×
= 
÷2= 
×14= 10×
=
×2= 
×
= 
÷
= 
÷
=
×10= 
+
= 52×
=
= 
÷
= 11﹣
=
×
= 
﹣
+
= 1÷9×
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
=
=
×
×
= 16×
= 
÷
= 1÷
=
÷
= 9÷
= 
÷33= 1﹣25%= 75%+0.25=
÷
= 
﹣
=
=
= 1÷10%= 74×4×25%= 
×15%=
粤公网安备 44130202000953号