### Video Transcript

Here are the temperatures in four cities at midnight and midday. At midnight, how many degrees colder was Paris than Rome? Which city was six degrees colder at midnight than at midday?

The first part of the question asks as to find the difference between the temperatures in Paris and Rome at midnight. The temperature in Paris at midnight was minus four degrees Celsius or four degrees below zero. And the temperature in Rome at midnight was three degrees Celsius.

To answer the question, we need to find the difference between these two temperatures. The difference between minus four or negative four and zero is four degrees. And the difference between zero and three degrees Celsius is three degrees. At midnight, Paris was seven degrees colder than Rome.

The second part of the question asks us to find out which city was six degrees colder at midnight than at midday. So we need to compare the temperature of each city at midnight and midday. Let’s start with Paris. Is it six degrees colder in Paris at midnight than at midday? At midnight, it’s four degrees below zero and at midday, it’s two degrees below zero. This gives us a difference of two degrees. So it’s not Paris.

Now, let’s look at the temperatures in Oslo at midnight and midday. At midnight, the temperature was 13 degrees below zero and at midday, the temperature was seven degrees below zero. This gives us a difference of one, two, three, four, five, six. The difference between these two temperatures is six degrees. So Oslo was six degrees colder at midnight than at midday.

So the answer to the first part of the question “at midnight, how many degrees colder was Paris than Rome?” it’s seven degrees. We used a number line to find the difference between four degrees below zero and three degrees. And the city which was six degrees colder at midnight than at midday is Oslo.

We find the answer by comparing the temperatures at midnight and midday in each of the cities. The difference in the temperature between midnight and midday in Paris was two degrees. The temperatures in Oslo at midnight and midday were 13 degrees below zero and seven degrees below zero. And we used a number line to find the difference, which was six degrees Celsius. As we’d already found the answer, we didn’t need to compare Rome and Warsaw.