问题
解答题
|
答案
(1)473+245-173
=473-173+245
=300+245
=545;
(2)327-175-125
=327-(175+125)
=327-300
=27;
(3)698-(387+298)
=698-298-387
=400-387
=13.
|
(1)473+245-173
=473-173+245
=300+245
=545;
(2)327-175-125
=327-(175+125)
=327-300
=27;
(3)698-(387+298)
=698-298-387
=400-387
=13.