简便计算:(2.008+20.08+200.8+2008)X2008
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![简便计算:(2.008+20.08+200.8+2008)X2008](/uploads/image/z/249242-50-2.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%3A%282.008%2B20.08%2B200.8%2B2008%29X2008)
简便计算:(2.008+20.08+200.8+2008)X2008
简便计算:(2.008+20.08+200.8+2008)X2008
简便计算:(2.008+20.08+200.8+2008)X2008
=(2008/1000+2008/100+2008/10+2008)X2008
=2008x2008x(1/1000+1/100+1/10+1)
=2008^2x1111/1000
=(2000+8)x(2000+8)x1.111
=(2000x2000+2x2000x8+8x8)x1.111
=(4000000+32000+64)x1.111
=4x(1000000+8000+16)x1.111
=4.444x(1000000+8x(1000+2))
=4444000+35.552x(1000+2)
=4444000+35552+71.104
=4479623.104
使用计算器,人算不如机器算
=(2222+8.888)*(2000+8)=(2230+0.888)*(2000+8)=2230*2000+2230*8+0.888*2000+0.888*8=4460000+17840+1776+7.104=4479623.104