12.8-0.5×0.5-0.75等于?用简便方法计算.
问题描述:
12.8-0.5×0.5-0.75等于?用简便方法计算.
答
12.8-0.5×0.5-0.75
=12.8-0.25-0.75
=12.8-(0.25+0.75)
=12.8-1
=11.8