1.996+19.97+199.8怎么巧算
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1.996+19.97+199.8怎么巧算
1.996+19.97+199.8怎么巧算
1.996+19.97+199.8怎么巧算
1.996+19.97+199.8
=2-0.004+20-0.03+200-0.2
=2+20+200-0.004-0.03-0.2
=222-0.234
=221.766
2-0.004+20-0.03+200-0.2=222.766
2+20+200+0.004+0.03+0.2
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