将一个长12厘米，宽9厘米，高5厘米的长方体，切成两个长方体，两个长方体表面积的总和最多是多少平方厘米？最少是多少平方厘米？
直接写出得数×﹦ 9÷﹦ ÷﹦ 1×÷1×﹦ ﹢﹦×2﹦ 27×﹦ 0÷﹦ ÷1÷﹦ ××9﹦
直接写出得数．÷6= 15÷= ×=÷= 42×= ﹣60%=10﹣99%= 40%×=
直接写出得数．24×= 1÷=×12= ×18÷3=÷= （﹣）×=×÷×=
直接写得数．= = = = = == = = = = =
直接写得数．×= ×12= ×=÷= ÷= 9×=÷═ ÷12=
×
﹦ 9÷
﹦ 
÷
﹦ 1×
÷1×
﹦ 
﹢
﹦
×2﹦ 27×
﹦ 0÷
﹦ 
÷1
÷
×
×9﹦
÷6= 15÷
= 
×
=
÷
= 42×
= 
﹣60%=
=
= 1÷
=
×12= 
×18÷3=
÷
= （
﹣
）×
=
×
÷
= 
= 
= 
= 
= 
=
= 
= 
= 
= 
= 
=
×
= 
×12= 
×
=
÷
= 
÷
= 9×
=
÷
═ 
÷12=
粤公网安备 44130202000953号