384+256×5960÷4-22657+246-357
296×3×2345+(263+455)+137712÷4÷2.

解:(1)384+256×5,
=384+1280,
=1664;

(2)960÷4-22,
=240-22,
=218;

(3)657+246-357,
=657-357+246,
=300+246,
=546;

(4)296×3×2,
=888×2,
=1776;

(5)345+(263+455)+137,
=(345+455)+(263+137),
=800+400,
=1200;

(6)712÷4÷2,
=712÷(4×2),
=712÷8,
=89.
分析:(1)先算乘法,再算加法;
(2)先算除法,再算減法;
(3)運用加法交換律簡算;
(4)按照從左到右的順序計算;
(5)運用加法交換律以及加法結合律簡算;
(6)根據(jù)連續(xù)除以兩個數(shù),等于除以這兩個數(shù)的積簡算.
點評:考查了四則混合運算,注意運算順序和運算法則,靈活運用所學的運算定律進行簡便計算.
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