12.43-(0.42+4.36)-2.64怎样计算简便
问题描述:
12.43-(0.42+4.36)-2.64怎样计算简便
答
12.43-(0.42+4.36)-2.64=12.43-(0.42+4.36+2.64)
=12.43-(0.42+7)
=12.43-7.42
=5.01
答
12.43-(0.42+4.36)-2.64
=12.43-0.42-4.36-2.64
=(12.43-0.42)-(4.36+2.64)
=12.01-7
=5.01
答
12.43-(0.42+4.36)-2.64=12.43-(0.42+4.36+2.64)
=12.43-(0.42+7)
=12.43-7.42
=5.01