PISA KHAN Set 3

A carpenter has 32 meters of timber and wants to create a border around a garden bed. He is considering the following designs for the garden bed.

Which of the following designs cannot be made with 32 meters of timber?

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Mark (from Sydney, Australia) and Hans (from Berlin, Germany) often communicate with each other using “chat” on the Internet. They have to log on to the Internet at the same time to be able to chat. To find a suitable time to chat, Mark looked up a chart of world times and found the following:

At 10:00 AM in Berlin, what time is it in Sydney?

Mei-Ling from Singapore was preparing to go to South Africa for 3 months as an exchange

student. She needed to change some Singapore dollars (SGD) into South African rand (ZAR).

Mei-Ling found out that the exchange rate between Singapore dollars and South African rand was:

1 SGD = 4.2 ZAR

Mei-Ling changed 3000 Singapore dollars into South African rand at this exchange rate.

How much money in South African rand did Mei-Ling get?

• 12 600 SGD

• 1 260 SGD

• 12 600 ZAR

• 1 260 ZAR

Mei-Ling from Singapore was preparing to go to South Africa for 3 months as an exchange student. She needed to change some Singapore dollars (SGD) into South African rand (ZAR).

On returning to Singapore after 3 months, Mei-Ling had 3 900 ZAR left. She changed this back to Singapore dollars, noting that the exchange rate had changed to:

1 SGD = 4.0 ZAR

How much money in Singapore dollars did Mei-Ling get?

• 15 600 SGD

• 1560 ZAR

• 975 SGD

• 975 ZAR

The graphics below show information about exports from Zedland, a country that uses zeds as its currency.

What was the value of fruit juice exported from Zedland in 2000?

• 1.8 million zeds.

• 2.3 million zeds.

• 2.4 million zeds.

• 3.4 million zeds.

• 3.8 million zeds.

The graphics below show information about exports from Zedland, a country that uses zeds as its currency.

What was the total value (in millions of zeds) of exports from Zedland in 1999?

Robert’s mother lets him pick one candy from a bag. He can’t see the candies. The number of candies of each colour in the bag is shown in the following graph.

What is the probability that Robert will pick a green candy?

Mei Lin's science teacher gives tests that are marked out of 100. After five Science tests, her average mark is 64. If she scored 80 marks on her fifth test, what was her total score for the first four tests?