David has 6 pizzas at his party His friends ate 3 Which doubles fact could you use to find how many are left?

To find the number of pizzas left, we can use the doubles fact 3 x 2 = 6. Since David's friends ate 3 pizzas, we can double that number to find the total number of pizzas they ate. 3 x 2 = 6, so David's friends ate 6 pizzas. To find the number of pizzas left, we simply subtract the number of pizzas eaten from the total number of pizzas David had. 6 - 6 = 0, so David has 0 pizzas left.