简算:0.2*3.8+62*0.08

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简算:0.2*3.8+62*0.08
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简算:0.2*3.8+62*0.08
简算:0.2*3.8+62*0.08

简算:0.2*3.8+62*0.08
答案是5.72

=0.2*3+0.2*0.8+6.2*0.8
=0.2*3+6.4*0.8
=0.2*3+6.4-6.4*0.2
=6.4-3.4*0.2
=6.4-0.68
=5.72
0.2*3.8+6*0.8+0.2*0.8
=0.2*4.6+6*0.8
=0.92+4.8
=5.72