问题
解答题
计算:
|
答案
(1)195+196+197+198+199,
=200×5-(5+4+3+2+1),
=1000-15,
=985;
(2)116-48+84.
=116+84-48,
=200-48,
=152.
计算:
|
(1)195+196+197+198+199,
=200×5-(5+4+3+2+1),
=1000-15,
=985;
(2)116-48+84.
=116+84-48,
=200-48,
=152.