Question

（2003•寧夏）已知a=-2，b=1，計(jì)算|a|+|b|的結(jié)果是    ．

Answer 1

【答案】分析：根據(jù)“正數(shù)的絕對(duì)值是其本身，負(fù)數(shù)的絕對(duì)值是其相反數(shù)”去掉絕對(duì)值，化簡(jiǎn)．
解答：解：∵a=-2，b=1，∴|a|=2，|b|=1；故|a|+|b|=2+1=3．
點(diǎn)評(píng)：本題考查絕對(duì)值的化簡(jiǎn)：一個(gè)正數(shù)的絕對(duì)值是它本身；一個(gè)負(fù)數(shù)的絕對(duì)值是它的相反數(shù)；0的絕對(duì)值是0．