Mathematics - Percentages - Percentage increase and decrease - Price Watch

Show price changes: 'A game was $40, now it's $50. What percent did it increase?' Options: 10%, 20%, 25%, 50%. Key: the increase is $10, and $10/$40 = 25%. Do 4 scenarios of price increases and decreases. Students often confuse: increase of $10 on a $40 item is NOT the same percent as $10 on a $100