49/5+499/5+4999/5怎样简算?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/26 10:47:31
49/5+499/5+4999/5怎样简算?49/5+499/5+4999/5怎样简算?49/5+499/5+4999/5怎样简算?49/5+499/5+4999/5=(50-1)/5+(500-1)

49/5+499/5+4999/5怎样简算?
49/5+499/5+4999/5怎样简算?

49/5+499/5+4999/5怎样简算?
49/5+499/5+4999/5
=(50-1)/5+ (500-1)/5+(5000-1)/5
=10+100+1000-1/5-1/5-1/5
=1110-3/5
=1110-0.6
=1109.4