题目内容

能简便计算的就简便计算:
7826-(826-1300)=87×99+87=125×88=54×102=
125×(4+8)=36×111+888×8=65×34+34×34+34=25×13×4=
(1)7826-(826-1300),
=7826-826+1300,
=7000+1300,
=8300;

(2)87×99+87,
=87×(99+1),
=87×100,
=8700;

(3)125×88,
=125×(8×11),
=125×8×11,
=1000×11,
=11000;

(4)54×102,
=54×(100+2),
=54×100+54×2,
=5400+108,
=5508;

(5)125×(4+8),
=125×4+125×8,
=500+1000,
=1500;

(6)36×111+888×8,
=36×111+111×64,
=111×(36+64),
=111×100,
=11100;

(7)65×34+34×34+34,
=34×(65+34+1),
=34×100,
=3400;

(8)25×13×4,
=25×4×13,
=100×13,
=1300.
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