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歡迎您訪問數(shù)學(xué)考題練習(xí):設(shè)甲數(shù)為a,乙數(shù)為b,把“甲數(shù)的3倍與乙數(shù)的差!

數(shù)學(xué)考題練習(xí):設(shè)甲數(shù)為a,乙數(shù)為b,把“甲數(shù)的3倍與乙數(shù)的差

更新時間:2024-01-12 16:25:02作者:貝語網(wǎng)校

設(shè)甲數(shù)為a,乙數(shù)為b,把“甲數(shù)的3倍與乙數(shù)的差去除甲數(shù)與乙數(shù)2倍之和”寫成代數(shù)式為

A.

B.

C.

D.

試題答案

A

試題解析

先表示出“甲數(shù)的3倍與乙數(shù)的差”為3a-b,再表示出“甲數(shù)與乙數(shù)2倍之和”為a+2b,最后列出兩代數(shù)式相除式子即可.

解答:根據(jù)題意可列出代數(shù)式為:.

故選A.

點(diǎn)評:本題考查了列代數(shù)式,解題的關(guān)鍵是正確理解文字語言中的關(guān)鍵詞,比如該題中的“倍”、“差”“除”“和”等,從而明確其中的運(yùn)算關(guān)系,正確地列出代數(shù)式.

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