(1)164×50÷82×48
(2)98+4×980+59×98
(3)624×48÷312÷8
(4)1350÷25.
解:(1)164×50÷82×48,
=164÷82×50×48,
=2×50×48,
=100×48,
=4800;
(2)98+4×980+59×98,
=98+40×98+59×98,
=(1+40+59)×98,
=100×98,
=9800;
(3)624×48÷312÷8,
=624÷312×(48÷8),
=2×6,
=12;
(4)1350÷25,
=(1350×4)÷(25×4),
=5400÷100,
=54.
分析:(1)164×50÷82×48,根據(jù)乘、除法的運(yùn)算性質(zhì)進(jìn)行簡算;
(2)98+4×980+59×98,將原式轉(zhuǎn)化為:98+40×98+59×98,再運(yùn)用乘法分配律進(jìn)行簡算;
(3)624×48÷312÷8,根據(jù)乘、除法的運(yùn)算性質(zhì)進(jìn)行簡算;
(4)1350÷25,根據(jù)商不變的性質(zhì)進(jìn)行簡算.
點(diǎn)評(píng):此題考查的目的是理解掌握乘、除法的運(yùn)算性質(zhì),并且能夠靈活運(yùn)用乘、除法的運(yùn)算性質(zhì)進(jìn)行簡便計(jì)算.