学校原来有680本练习本，用去478本，又买来350本．学校现在有多少本练习本？
只列式不计算﹣= 1.25×8= 2.7×= ÷2=1÷0.8= ×= 1﹣÷1﹣= ×0.8+×=
直接写出得数．72= ﹣= 6﹣= 14÷21=×÷= 0.22= 1÷= ÷60%=10﹣2÷25%= 24%×5=
直接写得数．×= += ﹣= +=×= ÷= ﹣= ×=14×= 20÷= 0×= ×23×1=
直接写出得数．﹣= 5﹣40%﹣1.6= ÷=3.14×102= ÷9= 2 5%×4=×= 6×÷6×=
直接写出得数．﹣= ÷= += ×= 1÷1%=
﹣
= 1.25×8= 2.7×
= 
÷2=
×
= 1﹣
÷1﹣
×
﹣
= 6﹣
×
÷
= 0.22= 1÷
= 
÷60%=
×
= 
+
= 
﹣
= 
+
=
×
= 
= 
﹣
= 
×
=
= 20÷
= 0×
= 
×23×1=
﹣
= 5﹣40%﹣1.6= 
÷
÷9= 2 5%×4=
×
= 6×
÷6×
=
﹣
= 
÷
= 
+
= 
×
= 1÷1%=
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