522-322÷7
39×8÷6
(483+217)×24.
解:(1)522-322÷7,
=522-46,
=476;
(2)39×8÷6,
=312÷6,
=52;
(3)(483+217)×24,
=700×24,
=700×(20+4),
=700×20+700×4,
=14000+2800,
=16800.
分析:(1)按运算顺序计算,先算除法,再算减法;
(2)按运算顺序从左向右依次计算;
(3)先算括号内的,再算括号外的.在计算700×24时,可以把24看作20+4,运用乘法分配律简算.
点评:此题重点考查了学生对整数四则混合运算的顺序的掌握情况.