题目内容

怎样算简便就怎样算
715+265+335+285
125×(8×4)×5125×96
759-159-63-37301×30630÷35.

(1)715+265+335+285,
=(715+285)+(265+335),
=1000+600,
=1600;

(2)125×(8×4)×5,
=(125×8)×(4×5),
=1000×20,
=20000;

(3)125×96,
=125×(8×12),
=(125×8)×12,
=1000×12,
=12000;

(4)759-159-63-37,
=(759-159)-(63+37),
=600-100,
=500;

(5)301×30,
=(300+1)×30,
=300×30+1×30,
=9000+30,
=9030;

(6)630÷35,
=630÷(7×5),
=630÷7÷5,
=90÷5,
=18.
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