3.997十19.96十l.9998十199.7 怎么简便
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3.997十19.96十l.9998十199.7 怎么简便
![3.997十19.96十l.9998十199.7 怎么简便](/uploads/image/z/18138620-20-0.jpg?t=3.997%E5%8D%8119.96%E5%8D%81l.9998%E5%8D%81199.7+%E6%80%8E%E4%B9%88%E7%AE%80%E4%BE%BF)
3.997+19.96+1.9998+199.7
=4-0.003+20-0.04+2-0.0002+200-0.3
=226-0.3432
=225.6568
=4-0.003+20-0.04+2-0.0002+200-0.3
=226-0.3432
=225.6568