74*83-183*25+83的简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 14:29:06
![74*83-183*25+83的简便运算](/uploads/image/z/1101105-9-5.jpg?t=74%2A83-183%2A25%2B83%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
74*83-183*25+83的简便运算
74*83-183*25+83的简便运算
74*83-183*25+83的简便运算
74*83-183*25+83
=74X83-(100+83)X25+83
=75X83-100X25-83X25
=(75-25)x83-100x25
=50x83-50x2x25
=50x(83-50)
=50x33
=1650
原式=74*83-83*25+83-100*25=83(74-25+1)-100*25=83*50-100*25=4150-2500=1650
74*83-183*25+83=(74*83+83)-183*25=75*83-100*25-83*25=50*83-2500=4150-2500=1650
原式=75×83-183*25=3*25*83-183*25=25*(3*83-183)=(249-183)*25=66*25=60*25 6*25=1500 150=1650