问题
解答题
用简便方法计算.
201×32-32
137-87-13+63
36+99×36.
答案
(1)201×32-32,
=(201-1)×32,
=200×32,
=6400;
(2)137-87-13+63,
=(137+63)-(87+13),
=200-100,
=100;
(3)36+99×36,
=36×(99+1),
=36×100,
=3600.
用简便方法计算.
201×32-32
137-87-13+63
36+99×36.
(1)201×32-32,
=(201-1)×32,
=200×32,
=6400;
(2)137-87-13+63,
=(137+63)-(87+13),
=200-100,
=100;
(3)36+99×36,
=36×(99+1),
=36×100,
=3600.