计算下面各题，能简算的必须简算．3.5×6.2+3.8×3.5 6.25÷1.25÷0.8．
直接写出得数．0÷=0.3+=82+28=0.22×100=
直接写出得数．×4= ×= ÷= ××=1÷= 1÷= ×0.75= ×14+=1﹣= += ÷5= ÷×÷=
直接写得数+= ﹣= 1÷= 7×=×3= += ﹣= ÷=÷4= 3÷= += 18×=
直接写出得数：﹣=0×=÷1=24.26+0.4=
直接写出得数 += ﹣= 12×= ×14= 20÷=×= 0×= ÷= ÷×12= 14×÷14×=
=
=
×4= 
×
= 
÷
= 
×
=
= 1
÷
= 
×0.75= 
×14+
﹣
= 
+
= 
÷
×
+
= 
﹣
= 1÷
= 7×
=
×3= 
+
= 
﹣
= 
÷
÷4= 3÷
= 
+
= 18×
=
﹣
=
=
÷1=
+
= 
﹣
= 12×
= 
×14= 20÷
=
×
= 0×
= 
÷
= 
÷
×12= 14×
÷14×
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