Final Chapter

The temperatures on the Moon are extreme: the maximum temperature is 123 °C and the minimum is –233 °C. What is the biggest difference in temperature that can be given on the Moon?

A book fair receives 29,860 visitors. A quarter of visitors enter with

free invitation and the rest buy the ticket. Each ticket costs 8 €. How much money will they collect at the fair with the sale of tickets?

Lluc plays with a mirror to experience how the letter L (which in

the figures occupies the upper right position). If you place the mirror first on the line below the L and then in the one on the left, which of the following figures shows the reflected images of the letter L correctly?

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If in a town of 6,000 inhabitants 63% of the population has black hair, how many inhabitants do not have black hair?

In a zoo there is an elephant that weighs 3,035 times what a flamingo weighs. If the flamenco weighs 2,8 kg, what is the weight in tons of the elephant?

The graph on the right shows the height of children in a second grade class primary school and the month they were born. Say the name of the tallest child.

The graph on the right shows the height of children in a second grade class primary school and the month they were born. Say the name of the youngest child.

Which of the following number series contains the number 500?

Series A = {1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, …}

Series B = {4, 12, 20, 28, 36, 44, 52, 60, …}

Series C = {3, 8, 13, 18, 23, 28, 33, 38, 43, …}

• Serie A

• Serie B

• Serie C