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3.7x12.8+0.37x872用简便算法是多少

3.7x12.8+0.37x872 =3.7x12.8+3.7x87.2 =3.7x(12.8+87.2) =3.7x100 =370

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原式 =3.7×12.8+3.7×87.2 =3.7×(12.8+87.2) =3.7×100 =370 请及时查看~~~

3.7×12.8+0.37×872 =3.7×12.8+3.7×87.2 =3.7×(12.8+87.2) =3.7×100 =370

3.7x12.8+0.37x872=0.37*128+0.37*872=0.37*1000=370

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