问题 解答题
怎样简便就怎样算.
389+327+211
608-154-146587-98
258+36×7224×(9+11)365-79+121.
答案

(1)389+327+211

=389+211+327,

=600+327,

=927;

(2)608-154-146

=608-(154+146),

=608-300,

=308;

(3)587-98

=587-(100-2),

=587-100+2,

=487+2,

=489;

(4)258+36×72

=258+2592,

=2850;

(5)24×(9+11)

=24×20,

=480;

(6)365-79+121

=286+121,

=407.

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