Saturday, September 14, 2013

Kids Math: Multiplications

Date:  Sep 14, 2013

I made this for Jay Jay.  And I told him, memorising multiplication is very easy.  You only need to memorise the colour one.  

Jay: Huh?  We need to learn ONLY 9x9=81 for 9 multiplication?  

Dad:  Yes!  You have learn 9x8, 9x7, etc before.  

Jay: Huh?  Puzzled.

Dad:  9x8 is 8x9, 9x7 is 7x9, so, you learned those in 8 multiplication table, so no need to learn twice.

Jay: Oh really. Ya!  

Dad:  So, you do not need to learn twice.

Jay:  Happy.

Of course, I have another one that has the answer on it.

You can do this using Excel.  And then print it out.

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So, every morning, let him take a look at the table and try to memorise.

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I sent him to CMA class.  And there is a nice little multiplication songs that he has to learned since few weeks ago.

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So, here he bring up his iPod to learn the song.  The challenge is when you use a song, he has to sing the song from 9x1, 9x2 to 9x8 to get the answer of 9x8.  HaHaHaHa.  But that is the easiest way to do it.

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After that, let's put this on test.  Give him some assessment book.  And when he can do all these, then, it is OK.  

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So, do this every day, and his multiplication will be improve.

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Make it a fun thing for him to learn.

I caught him "trying" to read my book one day.

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And the next thing you know, he has mastered the multiplication of 11 with any two digit number.

Dad: 43 x 11 =?

Jay:  473 (1 second calculate in his head)

Dad:  54 x 11 =?

Jay:  594

Dad:  how about 65 x 11 =?

Jay:  (he took 4 seconds) 615, no 715.

Yes, if you add up the two numbers is more than 10, you need carry over the 10 to the first digit.  So, you add 1 to 6.  

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Good luck in teaching your kid multiplication ya!

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