求简便运算:6.3*27+1.9*21
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求简便运算:6.3*27+1.9*21求简便运算:6.3*27+1.9*21求简便运算:6.3*27+1.9*216.3*27+1.9*21=21*0.3*27+1.9*21=21*(4.1+1.9)
求简便运算:6.3*27+1.9*21
求简便运算:6.3*27+1.9*21
求简便运算:6.3*27+1.9*21
6.3*27+1.9*21
=21*0.3*27+1.9*21
=21*(4.1+1.9)
=126
正确率100%的额