211*555+445*789+555*789+211*455

来源:学生作业帮助网 编辑:六六作业网 时间:2024/07/10 05:02:23
211*555+445*789+555*789+211*455211*555+445*789+555*789+211*455211*555+445*789+555*789+211*455211*555

211*555+445*789+555*789+211*455
211*555+445*789+555*789+211*455

211*555+445*789+555*789+211*455
211*555+445*789+555*789+211*455
=555*(211+789)+445*(789+211)
=555000+445000
=1000000

211*555+445*789+555*789+211*455
=555*(211+789)+445*(789+211)
=555000+445000
=1000000