Question

2.5×4.1-0.25用自己喜欢的方法计算

2.5×4.1-0.25用自己喜欢的方法计算

Answer 1

2.5×4.1-0.25
=2.5x4.1-2.5x0.1
=2.5x(4.1-0.1)
=2.5x4
=10
祝学习进步。

Answer 2

2.5×4.1-0.25

=2.5x(4+0.1)-0.25
=10+0.25-0.25
=10