Polite subjunctive with commands

[cmon]

Acceptable?

If you like, make the dinner.
Si quisieras, prepara la cena.

If you could, wash the car.
Si pudieras, limpia el coche.

If you should see him, give him this money.
Si debieras velo, da(r?)le este dinero.

[Rusty]

If you like, make the dinner.
Si quisieras, prepara la cena. :good:

If you could, wash the car.
Si pudieras, limpia el coche. :good:

If you should see him, give him this money.
Si debieras verlo, dale este dinero.Good job!

[CrOtALiTo]

Rusty's answer are very accurate, congratulations you are two.

[sosia]

The sentences are OK and the translation is accurate, but usually I use
¿Puedes/Podrías preparar la cena?
Si puedes, limpia el coche/ ¿Puedes limpiar el coche?
Si le ves, dale este dinero /Si debes verlo, dale este dinero

Saludos :D