A shoebox holds 140 baseball cards. If John has 11 packages of 8 cards, how many more packages of cards does John need to buy to fill the shoebox?

11*8=88

140-88=52
He needs 52 more to fill up the shoe box.

How many packages would he have to buy?

To solve this problem, we need to find the total number of cards John has and then calculate how many more cards he needs to fill the shoebox.

First, we find the total number of cards John has:
Number of cards in each package = 8
Number of packages John has = 11
Total number of cards John has = Number of cards in each package * Number of packages
= 8 * 11
= 88

Next, we calculate how many more cards John needs to fill the shoebox:
Number of cards in the shoebox = 140
Number of cards John needs to fill the shoebox = Number of cards in the shoebox - Total number of cards John has
= 140 - 88
= 52

Finally, we determine how many more packages of cards John needs to buy to fill the shoebox:
Number of cards in each package = 8
Number of cards John needs to fill the shoebox = 52
Number of packages John needs to buy = Number of cards John needs to fill the shoebox / Number of cards in each package
= 52 / 8
= 6.5

Since you cannot buy half of a package, John would need to buy 7 more packages of cards to fill the shoebox.