作业帮 > 数学 > 作业

70.1-41.89+2.78怎样简便运算(快点)

来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/10/03 21:27:49
70.1-41.89+2.78怎样简便运算(快点)
70.1-41.89+2.78怎样简便运算(快点)
70.1-41.89+2.78
=70.1+2.78-41.89
=72.88-41.89
=72.88-41.88-0.01
=30.99