亚洲男人天堂av,国产一区二区久久精品,国产精品一区二区久久精品,国产精品久久久久久一区二区三区,五月婷婷在线观看视频,亚洲狠狠色丁香婷婷综合

歡迎您訪問數學考題練習:下列說法:①-4的相反數;②-1與-4的乘積;!

數學考題練習:下列說法:①-4的相反數;②-1與-4的乘積;

更新時間:2024-01-12 14:10:57作者:貝語網校

下列說法:①-4的相反數;②-1與-4的乘積;③-4的絕對值;④-2的平方.其中結果與-(-4)相同的有

A.1個

B.2個

C.3個

D.4個

試題答案

D

試題解析

分別求得相應結果,與所給數值比較,找到結果相同的即可.

解答:-(-4)=4.

①-4的相反數是4,與-(-4)相同;

②-1與-4的乘積為4,與-(-4)相同;

③-4的絕對值是4,與-(-4)相同;

④-2的平方是4,與-(-4)相同;

共有4個結果與-(-4)相同.

故選D.

點評:用到的知識點為:a的相反數是-a;一個負數的絕對值是它的相反數;兩數相乘,同號得正,并把絕對值相乘;負數的偶次冪是正數.

主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |