wrong change =找错钱

↓

Give someone the wrong change 给某人找错钱

The cashier gave me the wrong change. I gave her 10 dollars to pay for a $5.00 book, and she only gave me 2 dollars back.

收银员给我找错钱了。我买了5美元一本的书，给了她10美元，但她只给我找了2美元。

too much change =多找钱

↓

give someone too much change给某人多找了

If a cashier gives you too much change, you'd better give it back.

如果收银员给你多找钱了，最好还回去。