54.38-(19.5+4.38) 简便
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/23 05:54:57
54.38-(19.5+4.38) 简便
54.38-(19.5+4.38) 简便
54.38-(19.5+4.38) 简便
54.38-(19.5+4.38)
=54.38-19.5-4.38
=(54.38-4.38)-19.5
=50-19.5
=30.5
54.38-(19.5+4.38)
=54.38-4.38-19.5
=50-19.5
=30.5
54.38-(19.5+4.38)
=54.38-4.38-19.5
=50-19.5
=30.5
=54.38-4.38-19.5
=50-19.5
=30.5