Kayan expected to pay about $690 for her new phone, but paid about $680 instead. What was the difference?

The difference was $10.

To find the difference between the expected price and the actual price, you can subtract the actual price from the expected price.

Expected price - Actual price

$690 - $680

So, the difference between the expected price and the actual price is $10.

To find the difference between the expected price and the actual price, you can subtract the actual price from the expected price:

$690 - $680 = $10

Therefore, the difference between the expected price and the actual price is $10.