问题 解答题
脱式计算.
①8400÷84+15×36

②540÷(38-29)×13=
③455+65×(273÷21)④(350-270÷45)×23.
答案

①8400÷84+15×36,

=100+540,

=640;

②540÷(38-29)×13,

=540÷9×13,

=60×13,

=780;

③455+65×(273÷21),

=455+65×13,

=455+845,

=1300;

④(350-270÷45)×23,

=(350-6)×23,

=344×23,

=7912.

判断题
单项选择题 B1型题