问题 解答题
394+8×7,693-(271+169)400-256-78,(416-360)÷7.
答案

(1)394+8×7,

=394+56,

=450;

(2)693-(271+169),

=693-440,

=253;

(3)400-256-78,

=144-78,

=66;

(4)(416-360)÷7,

=56÷7,

=8.

填空题
单项选择题 案例分析题