PISA 2012 Released
Items
•
He needs to delete 198 MB (350-152) so he could erase any two music albums
that added up to more than 198 MB, for example albums 1 and 8.
•
Yes, he could delete Albums 7 and 8 which gives available space of 152 + 75 +
125 = 352 MB.
No Credit
Code 0: Other responses.
Code 9: Missing.
PISA 2012 Released Items
Question 2: MEMORY STICK
PM00AQ02
During the following weeks, Ivan
deletes some photos and music, but also adds new
files of photos and music. The new disk status is shown in the table below:
Music
550 MB
Photos
338 MB
Free
space
112 MB
His brother gives him a new memory stick with a capacity of 2GB (2000 MB), which
is totally empty. Ivan transfers the content of his old memory stick onto the new one.
Which one of the following graphs represents the new memory stick’s disk status?
Circle A, B, C or D.
A
B
C
D
MEMORY STICK SCORING 2
QUESTION INTENT:
Description: Understand the relationships between the language of a problem
and the symbolic and formal language needed to represent it mathematically
Mathematical content area: Uncertainty and data
Context: Personal
Process: Interpret
Full Credit
Code 1: D
Music
Photos
Free space
Music
Photos
Free space
Music
Photos
Free space
Music
Photos
Free space
PISA 2012 Released Items
FAULTY PLAYERS
The
Electrix Company
makes two types of electronic equipment: video
and audio
players. At the end of the daily production, the players are tested and those with
faults are removed and sent for repair.
The following table shows the average number of players of each type that are made
per day, and the average percentage of faulty players per day.
