0.81+15.3= 1300﹣497= 3﹣1/2= 3/4+0.72=
1÷0.04= 1/8÷0.625= 4.5×4/15= ：
=
1.5+2/3×3= 1﹣1/3×2/5= 1.25×0.36×8= 1÷（2﹣2.09）=
0.81+15.3= 1300﹣497= 3﹣1/2= 3/4+0.72=
1÷0.04= 1/8÷0.625= 4.5×4/15= ：=
1.5+2/3×3= 1﹣1/3×2/5= 1.25×0.36×8= 1÷（2﹣2.09）=
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