，文艺书与其它两种书的比是1：5，文艺书比科技书少180本，科技书有多少本？相关试题
=
=
=
=
= 
+
= 
×
= 1÷
=
= 1.2×0.3= 2.5×0.4=
= 
= 
=直接写得数：
①66×2.011+0.34×201.1= 201.1②
÷18= 
③0.805÷0.7=
④（3.6×
×1.2）÷（1×2.4×0.18）= 
⑤4270÷14+305×99= 30500⑥100﹣58.3÷3﹣6×13.4=
⑦（2×5×7）×（
）= 59⑧
= ．
直接写得数：
①66×2.011+0.34×201.1= 201.1②÷18= ③0.805÷0.7=
④（3.6××1.2）÷（1×2.4×0.18）= ⑤4270÷14+305×99= 30500⑥100﹣58.3÷3﹣6×13.4=
⑦（2×5×7）×（）= 59⑧= ．
÷11=
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