(2015+201.5+20.15+2.015)÷1111

(2015+201.5+20.15+2.015)÷1111
2025-06-26 17:17:18
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回答1:

(2015+201.5+20.15+2.015)÷1111

=[2.015×(1000+100+10+1)]÷1111
=2.015×1111÷1111
=2.015。