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歡迎您訪問數(shù)學(xué)考題練習(xí):如果a是一個三位數(shù),現(xiàn)在把1放在它的右邊得到一!

數(shù)學(xué)考題練習(xí):如果a是一個三位數(shù),現(xiàn)在把1放在它的右邊得到一

更新時間:2024-01-12 16:35:38作者:貝語網(wǎng)校

如果a是一個三位數(shù),現(xiàn)在把1放在它的右邊得到一個四位數(shù),這個四位數(shù)是

A.1000a+1

B.100a+1

C.10a+1

D.a+1

試題答案

C

試題解析

由題意得,只需將原先的三位數(shù)擴大十倍再加上數(shù)字1即可得到四位數(shù).

解答:由題意得,這個四位數(shù)可表示為10a+1.

故選:C.

點評:本題考查了代數(shù)式的列法,正確理解題意將原先的三位數(shù)擴大十倍是解決問題的關(guān)鍵.

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