Do you have a paypal account?
If so you can add them to your wallet and use that at checkout.
If you do not have an account i do not think that it will let you use mixed cards.
People also ask wrote:
How do you use a PayPal gift card?
For PayPal members, you can simply add prepaid gift cards to your wallet then start using them during checkout - just like any other credit or debit cards. For users without PayPal account, you can just enter the card information during checkout in the same way you would do with credit or debit cards.