2000×200320032003+2003×20020002000 172.4×6.2+27247×0.38简便计算

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2000×200320032003+2003×20020002000 172.4×6.2+27247×0.38简便计算
2000×200320032003+2003×20020002000 172.4×6.2+27247×0.38
简便计算

2000×200320032003+2003×20020002000 172.4×6.2+27247×0.38简便计算
2000×200320032003+2003×20020002000
=2000x2003x100010001+2003x2000x100010001
=2x2000x2003x1000100010001
=4000x200320032003
=801280128012000
第二题是不是题目打错了?如果没打错的话,我就不知道怎么简算,下面是我改过后的题
172.4×6.2+2724×0.38
=172.4x6.2+272.4X3.8
=172.4x6.2+(172.4+100)x3.8
=172.4x(6.2+3.8)+100x3.8
=1724+380
=2104