ISEE Math Practice Test: Percent Change

1. During a severe winter in Ontario, the temperature dropped suddenly to 10 degrees below zero. If the temperature in Ontario before this cold spell occurred was 10 degrees above zero, by what percent did the temperature drop?

• A. 50%
• B. 100%
• C. 150%
• D. 200%

2. Fatty's Burger wants to attract more customers by increasing the size of its patties. From now on Fatty's patties are going to be 4 ounces larger than before. If the size of its new patty is 16 ounces, by approximately what percent has the patty increased?

• A. 25%
• B. 27%
• C. 33%
• D. 75%