直接写出得数 0.3+7= 40÷0.5= 1﹣0.01= 5.5a﹣a=0.125×4= 3.5÷0.05= 8.2÷0.01= 0.7﹣0.7÷2=
5= ．
计算：= ．
= ．
1﹣= ．
1+3= ．
= ．
= ．
= ．
= ．
+3= ．
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