0.59乘9.8简便运算!
问题描述:
0.59乘9.8简便运算!
答
0.59*10-0.2*0.59
答
0.59乘9.8
=0.59×(10-0.2)
=0.59×10-0.59×0.2
=5.9-0.118
=5.782