**Team A and Team B Scores**
In this quiz, Team A and Team B have played three successive rounds. The scores for each team in each round are as follows:

**Team A:**
- Round 1: -50
- Round 2: 20
- Round 3: 0

**Team B:**
- Round 1: 20
- Round 2: 0
- Round 3: -50

**Calculating the Total Scores**
To determine which team scored more, we need to calculate the total score for each team by adding up their scores in each round.

**Team A Total Score:**
- Round 1: -50
- Round 2: 20
- Round 3: 0

To calculate the total score for Team A, we add up the scores in each round:
- Total Score = -50 + 20 + 0
- Total Score = -30

**Team B Total Score:**
- Round 1: 20
- Round 2: 0
- Round 3: -50

To calculate the total score for Team B, we add up the scores in each round:
- Total Score = 20 + 0 + (-50)
- Total Score = -30

**Comparing the Total Scores**
Both Team A and Team B have a total score of -30. Therefore, they have scored the same in this quiz.

**Word Problems for Addition and Subtraction of Integers**
Word problems involving addition and subtraction of integers can help us understand how to apply these operations in real-life situations. Here are a few examples:

1. **Elevation Changes:** A hiker starts at an elevation of 500 meters. On the first day, the hiker climbs 200 meters. On the second day, the hiker descends 300 meters. What is the hiker's current elevation?
- Start Elevation: 500m
- First Day: +200m (climbing)
- Second Day: -300m (descending)

To find the hiker's current elevation, we add the changes in elevation:
- Current Elevation = Start Elevation + First Day + Second Day
- Current Elevation = 500 + 200 + (-300)
- Current Elevation = 400 meters

2. **Temperature Changes:** The temperature was 5 degrees Celsius in the morning. It dropped 8 degrees Celsius in the afternoon and then rose by 3 degrees Celsius in the evening. What is the current temperature?
- Morning Temperature: 5°C
- Afternoon: -8°C (drop in temperature)
- Evening: +3°C (rise in temperature)

To find the current temperature, we add the changes in temperature:
- Current Temperature = Morning Temperature + Afternoon + Evening
- Current Temperature = 5 + (-8) + 3
- Current Temperature = 0 degrees Celsius

These examples demonstrate how addition and subtraction of integers can be used to solve real-life problems involving elevation changes, temperature fluctuations, financial transactions, and more.

The both teams get the same points 30.