解:原式=5÷25÷5
=(1÷5)x(1÷5)
=1÷25
=0.04
[比心][比心][比心]
解:原式=5÷25÷5 =(1÷5)x(1÷5) =1÷25 =0.04 [比心
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解:原式=5÷25÷5
=(1÷5)x(1÷5)
=1÷25
=0.04
[比心][比心][比心]