Solve these real-life situations using negative numbers. Show your thinking step by step!
Questions:
Q1: The temperature was -3°C in the morning. By afternoon, it rose 5°C. What is the temperature now?
Q2: A submarine was at -20 meters below sea level. It then went down 15 meters further. What is its new depth?
Q3: The temperature was 4°C. Overnight, it dropped 7°C. What is the temperature now?
Q4: A mountain climber is at 250 meters above sea level. He descends 300 meters into a valley. What is his current elevation?
Q5: A diver is at -12 meters. He rises 7 meters. What is his new depth?
Q6: A hiker is at 8 meters above sea level in a canyon. He climbs 10 meters. What is his height above sea level?
Q7: The temperature was -6°C. It dropped 4°C during the night. What is the temperature now?
Q8: A balloon was 15 meters above the sea level. It descended 20 meters. What is its height now, relative to sea level?
Q9: The temperature was -1°C. It went up by 6°C. What is the new temperature?
Q10: A diver at -25 meters descends 10 more meters. What is his depth now?