10.1*1-56-0.156简便运算
题目应该是10.1*1.56-0.156吧?!
10.1*1.56-0.156
=(10+0.1)*1.56-0.156
=10*1.56+0.1*1.56-0.156
=15.6+0.156-0.156
=15.6.