简算:2.57+13.99
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简算:2.57+13.99简算:2.57+13.99简算:2.57+13.992.57+（14-0.01)=2.57+14-0.01=16.57-0.01=16.562.57+13.99=2,57+1
简算:2.57+13.99
简算:2.57+13.99
简算:2.57+13.99
2.57+（14-0.01)=2.57+14-0.01=16.57-0.01=16.56
2.57+13.99=2,57+14-0.01=16.57-0.11=16.56
望采纳哦~~
2.57+13.99
=2.56+(0.01+13.99)
=2.56+14
=16.56
13.99比14少0.01，加14就多加了0.01.故要减去，
2.57+14-0.01=16.56
简算:2.57+13.99
简算 3.64-8.43+（9.36-2.57)
0.99+13.99+99.999 这道题如何巧算?
2.57乘以4.
2.57英语怎么读
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