Primary 1 Mathematics Question....

[116520]

Parenthood is killing me... esp SINGAPORE education system... my daughter is now in K2. We, the parents, normally very kiasu, let her do Pri 1 assessment books........

Here is a question taken from "Mathematics Practical Periodic Revision For Primary 1 Pupils by SAP" (by the way, this book cost me $7 )

There were 5 businessmen at a meeting. Each businessman exchanged handshakes with one another. How many handshakes were exchanged in all?

Anyone bros here know the answer? hee hee.....

[kachin_snowy]

n(n-1)/2 where n = number of businessmen?

5 x 4 / 2 = 10 handshakes

[SamGMT]

sorry bro i can't help you on the question, guess we are in the same boat.... most of the time my wife do the teaching...

[cedric]

hmmmmmmm....first answer that come to mind...20...

[116520]

Correct! But don't be too happy bro.... how do you translate your equation into something a 6-year-old can understand????

n(n-1)/2 where n = number of businessmen?

5 x 4 / 2 = 10 handshakes

[kachin_snowy]

Correct! But don't be too happy bro.... how do you translate your equation into something a 6-year-old can understand????

It is actually a formula in networking to calculate the number of circuits required to connect up n number of sites directly. So, what is the model explanation given in the exercises? sound scary....

[louisoh]

n(n-1)/2 where n = number of businessmen?

5 x 4 / 2 = 10 handshakes

Wah... Pri 1 hw to understand tat...

[116520]

I feel sorry for the kids (those living in sg) now....

It is actually a formula in networking to calculate the number of circuits required to connect up n number of sites directly. So, what is the model explanation given in the exercises? sound scary....

[SamGMT]

[116520]

This is going to be fun....

here is another question:

1 ten 2 ones greater than _________ is 3 tens 4 ones.

1)16
2)18
3)22
4)24

[kachin_snowy]

This is going to be fun....

here is another question:

1 ten 2 ones greater than _________ is 3 tens 4 ones.

1)16
2)18
3)22
4)24

3) 22 ?

[Darkangel]

This is going to be fun....

here is another question:

1 ten 2 ones greater than _________ is 3 tens 4 ones.

1)16
2)18
3)22
4)24

3...

It took me quite awhile to figure =X

[116520]

Correct!!! But don't be so happy bro.....pri one math question hoh....

But why can't they put it into simple English?!??!!?? Instead of 1 ten 2 ones, just put 12 lah.... why make it sounds like buying 4D????

3) 22 ?

3...

It took me quite awhile to figure =X

[Darkangel]

Correct!!! But don't be so happy bro.....pri one math question hoh....

But why can't they put it into simple English?!??!!?? Instead of 1 ten 2 ones, just put 12 lah.... why make it sounds like buying 4D????

Yes!! agree!

Hahahaha

[116520]

Darkie, since you are awake.... here is another primary one math question:

I flipped through a book and turned to a page of the book. The sum of the facing pages was 25. What were the pages numbers?