lonny has $15 to buysome groceries for his mom .milkcosts $2.39,bread costs $1.29,eggs costs $0.79, and mayonnaise costs $2.49. if he bys one of each item ,can he expect to get $10 in change?

No.

Add the 4 prices and subtract from $15.

You can estimate by rounding to the nearest dollar and then adding.

add the costs, and subtract from 15.

Estimating 2.5+1+1+1.5=6
15-6 is not a ten dollar bill in change.

Of course, a few years ago I bought gasoline walked into the store to pay, got also a cup of coffee, offered the clerk $50.00 bill, he told me my change was $512.00, and he couldn't give it to me as he did not have that much in the register. I told him he did it wrong, he pointed to the electronic display, and told me to look! $512.00. I noticed the next week he was gone.

Estimating is a very valuable tool, it allows you to check the register.

To determine if Lonny can expect to get $10 in change, we need to calculate the total cost of the groceries and subtract it from the $15 he has.

Let's calculate the total cost:

Milk: $2.39
Bread: $1.29
Eggs: $0.79
Mayonnaise: $2.49

Total cost = $2.39 + $1.29 + $0.79 + $2.49 = $7.96

Now we subtract the total cost from the initial amount Lonny has:

Change = $15 - $7.96 = $7.04

Based on the calculations, Lonny can expect to get $7.04 in change, not $10.