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# How heavy are eight \$1 Singapore coins?

• Difficult PSLE question upsets parents

How heavy are eight \$1 Singapore coins? Six grams, 60g, 600g or 6kg?

That question in the Primary School Leaving Examination (PSLE) mathematics paper on Friday has upset a number of people, including parents.

At least one person suggested the question is not related to maths and that it must have baffled many pupils sitting the exam, Chinese evening daily Shin Min Daily News reported yesterday.

The person, surnamed Lee, posted on the Ministry of Education's Facebook page seeking clarification.

"Are we having (an) IQ exam or maths exam?" wrote the Facebook user, who also believed there could be more than one answer since the candidates were not told the weight of each coin.

According to a mother whose letter was published by Chinese daily Lianhe Zaobao, the exam question has generated a lot of discussion among parents.

"Our children found it difficult to answer," wrote Yin Xiuping, who said many pupils simply resorted to perception and estimation.

Some picked 600g because they had noticed how the pockets of their pants had sagged each time they placed coins in them, said Ms Yin.

Some based their answer on the belief that the weight of eight \$1 coins is close to that of a 500ml mineral water bottle, she added.

But private tutors told Shin Min that such questions are not uncommon in primary school exams.

"The question is in line with the maths syllabus. For example, pupils are taught to estimate the weights of objects such as a watermelon," said Ann Tan.

Some teachers have even brought their pupils to supermarkets where they can check out some common items first-hand, added Ms Tan.

According to another tutor, who wanted to be known only as Ms Sng, many pupils still cannot answer such questions although they have appeared before in the PSLE.

"Some parents want their children to only attend classes, take tuition and do their homework... They are not even allowed to make purchases on their own. But maths is all around us and children should learn from their surroundings," said Ms Sng.

Ms Yin wrote: "The conclusion among parents from this question is that their children should be made to do more housework so they could acquire basic knowledge on life."

And the answer to the question? Based on a photo showing eight \$1 coins on a weighing machine, which Shin Min got from a reader, the coins weigh 61g.

• in real life, you have weighing machine or calculator or Excel

i find our education not helping anyone in real life

• IRL, we need damn lotsa common sense too

• not how much  watermelons or fifi boobs weigh

but that coffee are usually hot, mcdonalds or not