379×1.038-3.79×3.8简便计算

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379×1.038-3.79×3.8简便计算

379×1.038-3.79×3.8简便计算
379×1.038-3.79×3.8简便计算

379×1.038-3.79×3.8简便计算
379×1.038-3.79×3.8
=3.79×103.8-3.79×3.8
=3.79×(103.8-3.8)
=3.79×100
=379

=379*1.038-379*1/100*3.8
=379*(1.038-0.038)
=379*1
=379

原式=3.79x103.8-3.79x3.8=3.79x(103.8-3.8)=3.79x100=379