To find out how much money Emma spent, we need to add the amounts together:

$6.25 + 1.12 + 3.75$

Now let's calculate it:

$6.25 + 1.12 = 7.37$ $7.37 + 3.75 = 11.12$

So, Emma spent $11.12 in total.

Would you like to see any further details on the addition process?

Here are five related questions:

1. If Emma had a $20 bill, how much change would she receive?
2. How much would Emma spend if she bought two pieces of cake?
3. What is the total if the price of the spaghetti and meatballs was increased by 10%?
4. If Emma decided to tip 15%, how much extra would she pay?
5. How much did Emma spend on food excluding the water?

Tip: When adding decimals, always align the decimal points to avoid mistakes.