问题 解答题
(1)234+(366+42)+158(2)2870÷(17+65)+178
(2)416-327+184-273(4)(398+74×17)÷24.
答案

(1)234+(366+42)+158,

=(234+366)+(42+158),

=600+200,

=800;

(2)2870÷(17+65)+178,

=2870÷82+178,

=35+178,

=213;

(3)416-327+184-273,

=(416+184)-(327+273),

=600-600,

=0;

(4)(398+74×17)÷24,

=(398+1258)÷24,

=1656÷24,

=69.

补全对话,情景问答
单项选择题