Rational Addition/Subtraction Worksheets Grade 7

1. Aisha is tracking the temperature changes in her science experiment. The temperature starts at -5.25°C. In the first phase, it increases by 8.75°C. In the second phase, it decreases by 12.5°C. In the final phase, it increases by 3.25°C. What is the final temperature?
2. -3/4 + 2/3 - 1/6 = ?
3. A rectangular prism is drawn on a coordinate plane with vertices at (0,0,0), (8,0,0), (8,5,0), (0,5,0), (0,0,3), (8,0,3), (8,5,3), and (0,5,3). A smaller rectangular prism is removed from the center, creating a hollow box. The inner prism has vertices at (2,1,0), (6,1,0), (6,4,0), (2,4,0), (2,1,3), (6,1,3), (6,4,3), and (2,4,3). What is the volume of the remaining solid?

…and 3 more problems

1. Aroha is monitoring the depth of a research submarine during an underwater expedition. The submarine starts at a depth of -45.75 meters (below sea level). It first ascends by 18.5 meters, then descends by 32.25 meters, and finally ascends again by 9.75 meters. What is the final depth of the submarine relative to sea level?
2. Mason is keeping track of the stock price of a company over four days. On Monday, the stock price started at $72.50. On Tuesday, it dropped by $15.75. On Wednesday, it gained $9.40. On Thursday, it fell by $12.80. What is the final stock price after all these changes?
3. A rectangular garden is drawn on a coordinate plane with vertices at (-3, 2), (5, 2), (5, -4), and (-3, -4). A diagonal path is drawn from (-3, 2) to (5, -4). What is the length of this diagonal path? Round your answer to the nearest tenth.

…and 4 more problems

1. A rectangular garden is drawn on a coordinate plane with corners at (-3, 2), (5, 2), (5, -4), and (-3, -4). What is the perimeter of this garden?
2. Olivia is monitoring the elevation of a hot air balloon. The balloon starts at an elevation of 150 feet above sea level. It then descends 275 feet to pick up a passenger. Later, it ascends 190 feet to catch a wind current. Finally, it descends 65 feet to get a better view. What is the final elevation of the balloon relative to sea level?
3. (-3/5 + 7/10) - (2/3 - 5/6) = ?

…and 4 more problems