计算:(-9又24/25)*(-125)

问题描述:

计算:(-9又24/25)*(-125)

首先根据乘法负负得正法则
(-9又24/25)*(-125)
=9又24/25*125
=(9*25+24)/25*125
=(9*25+24)*125/25
=(9*25+24)*5
=(225+24)*5
=249*5
=1245

=-9*-125 + 24/25*-125
=1125-120
=1005