2.6*35+8.1*70简便计算
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2.6*35+8.1*70简便计算2.6*35+8.1*70简便计算2.6*35+8.1*70简便计算2.6*35+8.1*70=2.6*0.5*70+8.1*70=(1.3+8.1)*70=(13+
2.6*35+8.1*70简便计算
2.6*35+8.1*70简便计算
2.6*35+8.1*70简便计算
2.6*35+8.1*70
=2.6*0.5*70+8.1*70
=(1.3+8.1)*70
=(13+81)*7
=94*7
=100*7-6*7
=700-42
=658
2.6*35+8.1*70
=1.3*70+8.1*70
=70*(1.3+8.1)
=70*9.4
=658
2.6*35+8.1*70
=(1.3*+8.1)*70
=9.4*70
=658
70(1.3+8.1)=658
2.6*35+8.1*70=2.6*70*1/2+8.1*70=1.3*70+8.1*70=(1.3+8.1)*70=9.4*70=658