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1.2222*0.29-3333*0.04+6666*0.092.(20052005-2005.2005)/(80208020-8020.8020)

题目详情
1.2222*0.29-3333*0.04+6666*0.09
2.(20052005-2005.2005)/(80208020-8020.8020)
▼优质解答
答案和解析
1) 2222*0.29-3333*0.04+6666*0.09
=1111*2*0.29-1111*3*0.04+1111*6*0.09
=1111*(0.58-0.12+0.54)
=1111*1
=1111
2) (20052005-2005.2005)/(80208020-8020.8020)
=2005.2005*(10000-1)/[8020.8020*(10000-1)]
=20052005/80208020
=2005*10001/(8020*10001)
=2005/8020
=401/1604
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