[Math]::Sqrt(2)
>>
1,4142135623731

[Math]::Truncate(49.6814343)
>>
49

[Math]::Round(49.6814343)
>>
50

[Math]::Round(49.6814343,3)
>>
49,681

[Math]::Pow(2,5)
>>
32

[Convert]::ToString(255,2)
>>
11111111

[convert]::ToInt32(11111111,2)
>>
255