算一算.56×99+5621×(300+3)421×101125×8885×82+82×1525×(400+4)-数学

题目简介

算一算.56×99+5621×(300+3)421×101125×8885×82+82×1525×(400+4)-数学

题目详情

算一算.
56×99+56
21×(300+3)
421×101125×88
85×82+82×1525×(400+4)
题型:解答题难度:中档来源:不详

答案


(1)56×99+56,
=56×(99+1),
=56×100,
=5600;

(2)21×(300+3),
=21×300+21×3,
=6300+63,
=6363;

(3)421×101,
=421×(100+1),
=421×100+421×1,
=42100+421,
=42521;

(4)125×88,
=125×(8×11),
=(125×8)×11,
=1000×11,
=11000;

(5)85×82+82×15,
=(85+15)×82,
=100×82,
=8200;

(6)25×(400+4),
=25×400+25×4,
=10000+100,
=10100.

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