P2 Math - General Discussion

[corneyAmber]

BlurBee:

ksi:

The answer key provided was 5, so I just want to see how many people would give different answers. As usual, many of the answer keys are blatantly wrong in the top schools exam paper unfortunately and I hope parents would be alerted not to mark blindly with the answer keys.

Agree. Hopefully the real answer keys are correct else our kids' ans will be marked wrong.

:hi5: Ah Bee otherwise gotta go to school to debate with the teachers. *sian*

[mrswongtuition]

vksmummy:

Hi parents,


Is it ok for P1 kids to still count using their hands, I am a bit worried as my child keeps counting using her hands, for example when I ask her what is
9 + 5, she must use her hands to count, is that normal for P1 or should I be worried?

If the child has not been exposed to any form of Maths classes before, it is quite normal for P1 children to use their fingers to count. With practice, they will stop doing that by the end of P1 or the start of P2.

[somaschool]

mrswongtuition:

vksmummy:

Hi parents,


Is it ok for P1 kids to still count using their hands, I am a bit worried as my child keeps counting using her hands, for example when I ask her what is
9 + 5, she must use her hands to count, is that normal for P1 or should I be worried?

If the child has not been exposed to any form of Maths classes before, it is quite normal for P1 children to use their fingers to count. With practice, they will stop doing that by the end of P1 or the start of P2.

Yes, I agree with mrswongtuition. Using their fingers shows they understand addition at a fundamental level, and are not just memorising symbols on a page. This builds a good foundation for critical thinking math later on.

soma math
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http://www.facebook.com/somaschoolsgp - where math becomes fun!

[jennykhots]

Hi. Maths Guru, please help:


Sam wanted to buy 7 T shirts but was short of $14. He bought 6 T-shirts and was left with $9. The cost of each T-shirt is the same. What was the original amount of money does Sam have?

I have used the guess & checked method but still in vain!

Thx…

[corneyAmber]

cost of shirt = u


7u-14 = 6u + 9

u = 23

So originally Sam had (6*23)+9=7*23-14=$147

[teachingmum]

Let me see…


After buying 6 t-shirts, she had $9 left.

However, this remaining $9 was not enough for her to buy one more t-shirt. She needed another $14.

Therefore, one t-shirt cost $9 + $14 = $23

6*$23= $138

$138 + $9 = $147.

[mrswongtuition]

For P2, a model would be clearer:


Sam wanted to buy 7 T shirts but was short of $14. He bought 6 T-shirts and was left with $9. The cost of each T-shirt is the same. What was the original amount of money does Sam have?

Sam's $: [---------------------------------------------------------------][14]
7 shirts : [--------][--------][--------][--------][--------][--------][--------]
6 shirts : [--------][--------][--------][--------][--------][--------][ 9 ]

Look carefully at the last unit (1 shirt), it is 14 + 9 = 23.

To find out how much he has, we need to find the cost of 6 shirts plus $9.
1 shirt = $23
6 shirts = 6 x $23= $138
Add the $9 left after buying 6 shirts = $138 + $9 = $147

[jennykhots]

thanks for the reply mrs wong, that is what we need to follow, the unit method.

[Charnic]

Is this really P2 Maths ?? I thought it was too difficult for a P2 students. Where is the question found, assessment or from school ?

[mrswongtuition]

This should actually be P3 Maths as P2s have not learnt multiplication of 2d by 1d.


However, similar questions have been spotted in P2 Maths homework (with smaller numbers which they are able to multiply).