算是如果是
0.9-0.2+1÷1.25
=0.7+0.8
=1.5
如果是
(0.9-0.2+1)÷1.25
=1.7÷1.25
=1.360.9与0.2的差加上1除以1.25的商是多少? 需要加上括号?0.9-0.2+1÷1.25=0.7+0.8=1.5
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