Alexis bought 1/2 pound grapes. How many ounces of grapes did she buy? Dan drew the number line below to slice the problem he says his model shows there are 5 ounces in pound 1/2 what is his error

8 ounces

Step-by-step explanation:

To solve the exercise the first thing is to find the equivalence between pound and ounce.

We know that 1 pound equals 16 ounces. In this exercise we have 1/2 pounds, that is, half a pound or 0.5 pounds, therefore:

1/2 pound * 16 ounces / 1 pound = 8 ounces

Which means that he bought 8 ounces of grapes and not 5 how he had put it.