Pat and the jellybeans

Question

Pat purchases 2.5 pounds of jellybeans at $0.98 per pound. What was his change from $10.00? Explain your answer.

Answer 1

2.5 x .98 = 2.45

10.00-2.45 = $7.55 in change

multiply the number of pounds times the price per pound to get the total cost

then subtract that $2.45 from $10 to get $7.55 in change

2.5 x .98 is almost 2.5 x 1 = 2.50, but slightly less, by a nickel

2 1/2 subtracted from 10 is 7 1/2 or $7.50 but add a nickel, to get $7.55 in change