Be a Squaring Expert in 30 seconds!

What is $35^2$ equal to?

Can you give the answer in 5 seconds without calculator or paper?

Ai Ling Ong

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)

22 Responses to Be a Squaring Expert in 30 seconds!

1. yan says:

hey, its been nice to receive email from you about the squaring expert method^^

its been useful and i've taught the method to my primary little sister ^^ and she's become an expert in this type of squaring.
thanks alot

i think u should come out with more maths secrets, it helps students to love maths even more :D

2. hey yan, i'm really glad that you shared with your lil sis and more so when we have 2 more squaring experts now! :)
i will work harder to share more maths secrets with everyone.

3. sara says:

hey saquaring expert waz so cool
im extremely impressed and i have definately learnt alot
thankyou

4. just says:

yeah it was definitely good but then i am still not an expert. i only know how to square numbers ending with 5.what if it doesn't? lol.

5. Just: "Acknowledge yourself , the fact that you know how to square double digit numbers ending with 5 only means that you are an expert compared to someone who still needs paper and calculator"
:)

6. Hi alwaysLovely,

I am happy with the powerpoint slides.
Btw does that method work for only number ending with 5, cause l tried it with other numbers but fail to get correct answers.

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8. htun htun htet says:

That's really good for us. I don't know how to solve this without using the calculator. This is also save our time within the exam. That's is really need for us.
:-)

9. Aung says:

Wow! That's neat. Simple but amazing. =D nice strategy

10. Ong says:

Hi alwaysLovely,
thanks for sharing the powrpoint slideshow.
It has been a great help! :D

11. Rain says:

Thank you for sharing, it really help to speed me up. Does this apply to number not ending with 5?

Rain:

This strategy works ONLY when you SQUARE numbers ending with '5'.

;)

12. Thanks for the powerpoint slideshow. But then , I've not been able to get it. Did try it severally, and had problem comprehending. Help me out pls.

Hi Gracious, the strategy works when you square number ending with '5' for example 65 * 65 = ? , 85 * 85 = ?
To do this, it's extremly easy,
#1: the answer will end with '25'
#2: take the first digit (6) x (multipy by) (1 more than 6 =7)
aka 6 * 7 = 42
:)

13. nim says:

hi
Thanks a lot It was wonderful experience to teach kids throgh your presentation
I would love to have more

nim: I'm glad you like it.
This is to prove to students that Math is all about knowing & applying the strategy for them to love the subject and definitely score in exams.

14. qit says:

i was totally impressed by this..n i will definitely share this with my nephew n niece..

looking forward to more tips n tricks from you!

15. omair says:

it was a cool trick. but i already knew this trick. had read somewhere in a book.