1. Cash payment: you can pay directly in cash. You can take out 7 1 yuan notes and 5 1 dime coins, making a total of 50 7 yuan dimes to pay for the pencil case. This is the most direct and common way.

2. Electronic payment: If you have a mobile phone, you can use an electronic payment application, such as Alipay or WeChat payment, to scan the QR code of the merchant to complete the payment. This method is convenient and fast, and has gradually become the first choice for many people to pay.

3. Bank card or credit card payment: If you have a bank card or credit card, you can put the card on the card reader, enter the password or verify the fingerprint to complete the payment. This way is more common in shops or supermarkets.