9.3/4+99.3/4+999.3

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/21 20:28:51
9.3/4+99.3/4+999.39.3/4+99.3/4+999.39.3/4+99.3/4+999.39.3/4+99.3/4+999.3=(9.3+0.7)/4+(99.3+0.7)/4+(9

9.3/4+99.3/4+999.3
9.3/4+99.3/4+999.3

9.3/4+99.3/4+999.3
9.3/4+99.3/4+999.3
=(9.3+0.7)/4+(99.3+0.7)/4+(999.3+0.7)-0.7-0.7/4-0.7/4
=10/4+100/4+1000-0.7-0.7/2
=2.5+25+1000-0.7-0.35
=1027.5-1.05
=1026.45

9.3/4+99.3/4+999.3/4
=10-1/4+100-1/4+1000-1/4
=(10+100+1000)-(1/4)*3
=1110-3/4
=1109. 1/4