0.56/0.28+2.8的简便算法
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0.56/0.28+2.8的简便算法0.56/0.28+2.8的简便算法0.56/0.28+2.8的简便算法0.56/0.28+2.8=0.28*2/0.28+2.8=2+2.8=4.8
0.56/0.28+2.8的简便算法
0.56/0.28+2.8的简便算法
0.56/0.28+2.8的简便算法
0.56/0.28+2.8
=0.28*2/0.28 +2.8
=2+2.8
=4.8