简算3/4+0.75+1/4+0.25,要运用加法的()和()
问题描述:
简算3/4+0.75+1/4+0.25,要运用加法的()和()
答
简算3/4+0.75+1/4+0.25,要运用加法的(交换律)和(结合律)
3/4+0.75+1/4+0.25
=3/4+1/4+0.25+0.75
=(3/4+1/4)+(0.25+0.75)
=1+1
=2