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速算与巧算(2)959595*96-969696*95444…4(2005个4)/555…5(2005个5)=(0.1+0.12+0.123+0.1234)*(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)*(0.12+0.123+0.1234)比较0.1234*0.4321与0.12345*0.432的计

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(1)959595*96-969696*95= 959595*95 + 959595 - 959595*95 - 10101*95= 959595 - 959595 = 0(2)444…4(2005个4)/555…5(2005个5)= 4*(2005个1)/5/(2005个1)=4/5=0.8(3)(0.1+0.12+0.123+0.1234)*(0.12+0.123+0...