已知208本书放在两个书架上，每个书架4层，每层 本．
= = = == = = == =
直接写得数．﹣= ×= ×44= ÷22= 4.5×10%=÷= ÷= ﹣1.25= 1.5+= X﹣X=
直接写出得数．= = = = 100÷50%=0.25﹣= 1﹣20%= 0.3×30%= ×4= 1÷÷=×30= 1﹣=
直接写出结果﹣= ，×1.2= ，5﹣1﹣1.6= ，÷= ，2×0= ，÷9= ，×12= ，0.25×4= ，÷= ，×20%= ．
直接写出得数+= ﹣= += 1﹣= += =+= ﹣= 3﹣= += 3÷7= 43=
= 
= 
= 
=
= 
= 
= 
=
= 
=
﹣
= 
×
= 
×44= 
÷22= 4.5×10%=
÷
= 
÷
= 
﹣1.25= 1.5+
= 
X﹣
X=
= 
= 
= 
= 100÷50%=
= 1﹣20%= 0.3×30%= 
×4= 1÷
×30= 1﹣
=
﹣
= ，
×1.2= ，5﹣1
﹣1.6= ，
÷
= ，
×0= ，
÷9= ，
×12= ，0.25×4= ，
÷
= ，
×20%= ．
+
= 
﹣
= 
+
= 1﹣
= 
= 
=
+
= 
﹣
= 3﹣
= 
+
= 3÷7= 43=
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