解:(1)425÷(155-130),
=425÷25,
=17;
(2)(765-230)×45,
=535×45,
=24075;
(3)109+127+73,
=109+(127+73),
=109+200,
=309;
(4)608-154-146,
=608-(154+146),
=608-300,
=308;
(5)165-97,
=165-(100-3),
=165-100+3,
=65+3,
=68;
(6)258+98,
=258+(100-2),
=258+100-2,
=358-2,
=356.
分析:(1)先算括號(hào)里的減法,再算括號(hào)外的除法;
(2)先算括號(hào)里的減法,再算括號(hào)外的乘法;
(3)根據(jù)加法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)算;
(4)根據(jù)減法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)算;
(5)165-97化成165-100+3,進(jìn)行簡(jiǎn)便計(jì)算;
(6)258+98化成258+100-2,再進(jìn)行簡(jiǎn)算;
點(diǎn)評(píng):此題主要考查整數(shù)四則混合運(yùn)算,要注意分析,運(yùn)用合適的簡(jiǎn)便方法計(jì)算.