Can You Help Santa Claus Solve These Math Puzzles?

Let's start with something simple. Can you solve this problem for Santa Claus?

The romantic association we have with snow on Christmas Day dates back to Charles Dickens who grew up during the so-called ‘Little Ice-Age’.

The romantic association we have with snow on Christmas Day dates back to Charles Dickens who grew up during the so-called ‘Little Ice-Age’.