题目内容

37+25+63250-167-33125×23×872×125
4×8×25×12525×(6+8)45×17+17×5563×98.
(1)37+25+63,
=(37+63)+25,
=100+25,
=125;

(2)250-167-33,
=250-(167+33),
=250-200,
=50;

(3)125×23×8,
=(125×8)×23,
=1000×23,
=23000;

(4)72×125,
=9×(8×125),
=9×1000,
=9000;

(5)4×8×25×125,
=(4×25)×(8×125),
=100×1000,
=100000;

(6)25×(6+8),
=25×6+25×8,
=150+200,
=350;

(7)45×17+17×55,
=(45+55)×17,
=100×17,
=1700;

(8)63×98,
=63×(100-2),
=63×100-63×2,
=6300-126,
=6174.
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