1. The problem asks: At midnight, how many degrees colder was Paris than Rome? 2. From the table, Paris at midnight is $-4$ degrees and Rome at midnight is $3$ degrees. 3. To find how many degrees colder Paris was, subtract Paris's temperature from Rome's: $$3 - (-4) = 3 + 4 = 7$$ So, Paris was 7 degrees colder than Rome at midnight. 4. Next, which city was 6 degrees colder at midnight than at midday? 5. Calculate the difference between midnight and midday temperatures for each city: - Paris: $-4 - (-2) = -4 + 2 = -2$ - Oslo: $-13 - (-7) = -13 + 7 = -6$ - Rome: $3 - 10 = -7$ - Warsaw: $-6 - 2 = -8$ 6. The city with a difference of $-6$ degrees (6 degrees colder at midnight than midday) is Oslo. **Final answers:** - Paris was 7 degrees colder than Rome at midnight. - Oslo was 6 degrees colder at midnight than at midday.