Suprises while doing Get-Urnfield

Fractions get rounded up. So 'A' * 0.6 is 'A' rather than ''

Suprises while doing Get-BowlingScore

Booleans aren't keywords. pwsh reuses the variable syntax like $false

If statements dont use && to add predicate conditions. pwsh uses -and

Negative numbers have to be wrapped in parens or pwsh thinks they are switches to commands: Add-Numbers (-2) 2

Suprises while doing Get-Roman

Hashtables aren't ordered by default. You can force it by adding an [ordered] before assigning the hashtable literal.