Answer: 8.50 + .50 = 9.00
Explanation:
Similar to 50+50 = 100, it's the same for 0.5+0.5 = 1.00. It's the same no matter how many zeros (0's) you put at the end of the 5.
If it's $0.50 for each topping, say you have a small cheese pizza for $8.50. You want four toppings. $0.50 x 4 = $2.00. Your new total is $10.50.