Question

15、絕對(duì)值小于5的所有的整數(shù)的和是

0

．

Answer 1

分析：絕對(duì)值的意義：一個(gè)數(shù)的絕對(duì)值表示數(shù)軸上對(duì)應(yīng)的點(diǎn)到原點(diǎn)的距離．
互為相反數(shù)的兩個(gè)數(shù)的和為0．

解答：解：根據(jù)絕對(duì)值的意義，結(jié)合數(shù)軸，得
絕對(duì)值小于5的所有整數(shù)為0，±1，±2，±3，±4．
所以0+1-1+2-2+3-3+4-4=0．

點(diǎn)評(píng)：此題考查了絕對(duì)值的意義，并能熟練運(yùn)用到實(shí)際當(dāng)中．
能夠結(jié)合數(shù)軸，運(yùn)用數(shù)形結(jié)合的思想，進(jìn)行分析計(jì)算．