分析:根據(jù)奇數(shù)與偶數(shù)的意義:自然數(shù)中,是2的倍數(shù)的數(shù)叫做偶數(shù),不是2的倍數(shù)的數(shù)叫做奇數(shù);及奇數(shù)和偶數(shù)的性質(zhì):
(1)奇數(shù)和奇數(shù)的和是偶數(shù);
(2)偶數(shù)與偶數(shù)的和是偶數(shù),偶數(shù)與偶數(shù)的差是偶數(shù);
(3)奇數(shù)與偶數(shù)的和是奇數(shù),奇數(shù)與偶數(shù)差是奇數(shù);
(4)奇數(shù)與奇數(shù)的積是奇數(shù);進而解答即可.
解答:解:奇數(shù)+奇數(shù)=偶數(shù);
奇數(shù)+偶數(shù)=奇數(shù),
偶數(shù)+偶數(shù)=偶數(shù).
故答案為:偶數(shù),奇數(shù),偶數(shù).
點評:此題考查的是奇數(shù)和偶數(shù)的性質(zhì),根據(jù)其性質(zhì)進行分析即可.