49 又 24/25×5

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/25 10:08:24
49又24/25×549又24/25×549又24/25×549又24/25×5=49×5+24/25×5=245+24/5=249又4/5=(50-1/25)×5=50×5-1/25×5=250-1

49 又 24/25×5
49 又 24/25×5

49 又 24/25×5
49 又 24/25×5
=49×5+24/25×5
=245+24/5
=249又 4/5

=(50-1/25)×5
=50×5-1/25×5
=250-1/5
=249又4/5

49 又 24/25×5
= (49 +1 - 1/25)×5
= 50×5 - 1/5
= 249.8

49 又 24/25×5
原式=(50-1/25)×5
=50×5-1/25×5
=250-1/5
=249又4/5
(要注意格式的,否则扣0.5分)请楼主注意、