Question 1: Calculate the total change in temperature after a cold day of -5°C followed by a warm day of +3°C. What is the overall temperature change?

Answer: -2

Question 2: A runner loses 8 seconds in the first mile but then gains 4 seconds in the second mile. What is her net time change?

Answer: -4

Question 3: A cyclist's speed decreases by 6 km/h during a downhill segment and then increases by 2 km/h during an uphill segment. What is the net change in speed?

Answer: -4

Question 4: During a game, a player scores 10 points and then loses 3 points in penalties. What is the player's total score?

Answer: 7

Question 5: A swimmer's net gain in distance after two laps is +12 meters. The first lap adds 20 meters, but the second lap subtracts 8 meters. How much did she swim in the second lap?

Answer: -8

Question 6: A football player loses 4 yards in one play and gains 6 yards in the next. What is his total yardage after these two plays?

Answer: 2

Question 7: In a fitness challenge, Sarah runs 5 km more than her usual distance but then reduces her running distance by 7 km. If her usual distance is 10 km, what is her new total distance?

Answer: 8

Question 8: Construct a number line to show the sum of -7 and +5. Mark the starting point and the final position.

Answer: See full answer key

Question 9: A basketball game has -15 points for one team in the first half and +8 points in the second half. What is the total score?

Answer: -7

Question 10: A sprinter's speed drops by 3 m/s during a race but then increases by 4 m/s in the final stretch. What is her net change in speed?

Answer: 1

Question 11: Error Analysis: A student calculated 5 + (-3) as 8. What is the mistake, and how should it be correctly solved?

Answer: Mistake: Adding positive and negative without considering signs. Correct answer: 2.