Sometimes, numbers are so big that we need tools to compare them, somehow. [br]We can use fractions for that![br][br]Find the information that you need, and answer the following questions:[br][br]1) If the world had 100 people, how many people would live in Asia? And in Europe? And in Spain? [br][br]2) What fraction of the world's [b]population [/b]live in those places? What about both?[br]Can you approximate it using easier fractions?[br][br]3) How many people have access to [b]drinking water[/b]? How many people don't? [br]What fraction of the world's population are those? Can you approximate it using simpler fractions?[br][br]4) Discuss with your group, and express your feelings about your solutions. Do they make sense? Are fractions useful for understanding these quantities? (Podéis comentar y responder este apartado en castellano).[br][br][i]Tip: Use the gadgets in previous sessions to represent your fractions. [br][br]Tip: You can use expressions like the following:[br][br] " _____ people live in Asia."[br][br][/i]"[i]_____ of the world live in Asia."[/i]

In my hotel:[br][br]- [math]\text{\frac{1}{4}}[/math] of the people are german.[br]- [math]\text{\frac{2}{5}}[/math] of the people are french.[br]- [math]\text{\frac{1}{6}}[/math] of the people are american.[br]- [math]\text{\frac{1}{3}}[/math] of the people are japanese.[br][br]1) At least, how many people are staying in the hotel? [br][br]2) I have checked the numbers... and there has to be a mistake! Can you tell what it is?[br][br]