3.14*625+31.4*17.44+3.14用简便运算
问题描述:
3.14*625+31.4*17.44+3.14用简便运算
答
3.14*625+31.4*17.44+3.14
=3.14*625+3.14*174.4+3.14*1
=(625+174.4+1)*3.14
=800.4*3.14
=2513.256