Rational Applications Worksheets Grade 7

1. Ava is tracking the temperature changes in her freezer for a science experiment. At 6:00 AM, the temperature inside the freezer was -16°C. She then opened the freezer door for 30 minutes, causing the temperature to rise by 11°C. After closing the door, the freezer's cooling system worked to lower the temperature by 6°C. Later in the day, she added a warm container of soup, which caused the temperature to increase by 21°C. What is the final temperature inside the freezer?
2. Liam is tracking the elevation of a hot air balloon. The balloon starts at an elevation of 135 meters above sea level. It then descends 220 meters to pick up a passenger. After picking up the passenger, it ascends 175 meters, then descends 95 meters to catch a wind current, and finally ascends 145 meters to reach its cruising altitude. What is the final elevation of the hot air balloon in meters?
3. Noah's bank account balance was -$126. He deposited $41 and then wrote a check for $56. What is his new balance?

…and 4 more problems

1. A factory produces 15,000 units of a product in 8 hours. Due to a machine upgrade, their production rate increases by 25%. How many units will they produce in 12 hours at the new rate?
2. Emma is planning a road trip from her home in Chicago to visit her grandparents in St. Louis, a distance of 300 miles. Her car gets 25 miles per gallon on the highway. If gasoline costs $3.80 per gallon and she also needs to pay $12 in tolls for the entire trip, how much will Emma spend in total for gasoline and tolls?
3. Kaia's bank account balance was -$137. She deposited $213. What is her new balance?

…and 5 more problems

1. (-3/4 + 2/3) × 12 = ?
2. Emma's bank account balance was -$85. She deposited $142. What is her new balance?
3. Olivia has 81 dollars in their bank account. They write a check for 37 dollars to pay for a school field trip. What is the new balance in their account?

…and 5 more problems