1樓:ayの0077e薩
(1)26-3.17-7.83,
=26-(3.17+7.83),
=26-11,
=15;
(2)67×38+33×38,
=(67+33)×38,
=100×38,
=3800;
(3)125×25×64,
=125×25×4×8,
=(125×8)×(25×4),
=1000×100,
=100000;
(4)29.38-(19.38-4.76),=29.38-19.38+4.76,
=10+4.76,
=14.76;
(5)329×87-87×29,
=(329-29)×87,
=300×87,
=26100;
(6)5.8-3.62-0.38+0.2,=(5.8+0.2)-(3.62+0.38),=6-4,=2.
計算下面各題,能簡便計算的要用簡便方法計算. 296+73+104+37 1600÷25÷4 125×54-46×125 50
2樓:憽人戾
(1)296+73+104+37,
=(296+104)+(73+37),
=400+110,
=510;
(2)1600÷25÷4,
=1600÷(25×4),
=1600÷100,
=16;
(3)125×54-46×125,
=125×(54-46),
=125×8,
=1000;
(4)50.34+11.645-42.34,=50.34-42.34+11.645,
=8+11.645,
=19.645;
(5)125×25×32,
=125×25×4×8,
=(125×8)×(25×4),
=1000×100,
=100000;
(6)99+99×99,
=99×(1+99),
=99×100,
=9900.
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