3.25+1.98= 10.32-1.98= 简便运算!
问题描述:
3.25+1.98= 10.32-1.98= 简便运算!
小弟无才,知道的说下啊!
答
3.25+1.98=3.25-0.02+0.02+1.98=3.23+2=5.23
10.32-1.98=10.32+0.02-0.02-1.98=10.34-2=8.34