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用简便方法计算.329×10154×98+46×983000÷125800÷25(125×25)×857×15+42×15+15.

题目详情
用简便方法计算.
329×101
54×98+46×98 3000÷125
800÷25 (125×25)×8 57×15+42×15+15.
▼优质解答
答案和解析
(1)329×101,
=329×(100+1),
=329×100+329×1,
=32900+329,
=33229;

(2)54×98+46×98,
=(54+46)×98,
=100×98,
=9800;

(3)3000÷125,
=(3000×8)÷(125×8),
=24000÷1000,
=24;

(4)800÷25,
=(800×4)÷(25×4),
=3200÷100,
=32;

(5)(125×25)×8,
=125×8×25,
=1000×25,
=25000;

(6)57×15+42×15+15,
=(57+42+1)×15,
=100×15,
=1500.