问题
选择题
式子0.4(a+3.5)与式子0.4a+3.5比较[ ]
A.大小相等
B.0.4(a+3.5)比0.4a+3.5多0.4×3.5
C.0.4(a+3.5)比0.4a+3.5少2.1
答案
答案:C
式子0.4(a+3.5)与式子0.4a+3.5比较[ ]
A.大小相等
B.0.4(a+3.5)比0.4a+3.5多0.4×3.5
C.0.4(a+3.5)比0.4a+3.5少2.1
答案:C