问题
解答题
|
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.
|
(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.