1. Exchange points with another team.

2. Swap points with another team.
(Are both the same?)

3. Take away 300 points from one team.
4. Bring 300 points from another team.
5. Take away 30 points from each team.
(Are they the same in meaning?)

(Do we have to use 'one' or 'another' if there are three teams and they are playing a game related to getting points by answering questions on slides? Do you have some more suitable expressions we can use in such a game?)

1 and 2 are both correct.

3 is correct. 4 is wrong. 5 is different; it means that you're taking points from all of the teams.

1. "Exchange points with another team" means that two teams agree to trade or swap their points. This implies that the teams have a mutual agreement to transfer points between each other.

2. "Swap points with another team" is similar in meaning to "exchange points with another team." It also implies that two teams agree to trade their points.

In summary, both expressions convey the same meaning of teams agreeing to transfer points between each other.

3. "Take away 300 points from one team" implies subtracting 300 points from a specific team's score. This action is done to decrease the points of a single team.

4. "Bring 300 points from another team" suggests adding 300 points to a particular team's score. This action is performed to increase the points of a specific team.

5. "Take away 30 points from each team" means deducting 30 points from the score of every team involved. This action is done uniformly to decrease the points of all teams by the same amount.

Regarding expressions for use in a game scenario involving three teams, you can consider the following phrases:

- "Transfer points between teams": This expression implies that points are moved from one team to another, without specifying the number of points or the direction of the transfer.

- "Distribute points among teams": This phrase suggests sharing or allocating points among the three teams. The points may be divided evenly or based on some predetermined criteria.

- "Adjust scores collectively": This expression indicates making changes to the scores of all teams together, either by adding or subtracting points.

Remember, the key aspect is to ensure clarity and agreement among the participants about the rules and actions related to point transfers.