# Lesson: QC Strategy - Approximation

## Comment on QC Strategy - Approximation

### 3003/9009=1/3 then 3003/9047

3003/9009=1/3 then 3003/9047 should be more then 1/3 how it is less than 1/3

### To show why making the

To show why making the denominator bigger makes the value of the fraction smaller, consider this extreme example with a super huge denominator:
3003/300300000000
This fraction simplifies to 1/100000000, which is MUCH smaller than 1/3.

For more on this strategy see https://www.greenlighttestprep.com/module/gre-arithmetic/video/1067 (the related concept starts at 3:00)

Thanks for this!

### I am enjoying learning your

I am enjoying learning your tricks... I am planning on barely using the calculator if not at all... Thank you..

### very helpful tips and tricks.

very helpful tips and tricks..makes life so easy...thank you so much

### Learned something new today!

Learned something new today! thanks

Cheers,
Brent

### Hello sir,

Hello sir,
I am really finding your videos useful but I am not getting how to access all the questions related to one particular topic.Kindly guide me.

### Under most video lessons

Under most video lessons (like the video above), have a Reinforcement Activities box (like the one above) with links to practice questions related to the concepts covered in the video lesson.

Here's a better example: https://www.greenlighttestprep.com/module/gre-arithmetic/video/1071

Does that help?

Cheers,
Brent

### Brilliant! I am very pleased

Brilliant! I am very pleased that I found...I need to kick ass on this exam

Cheers,
Brent

### Very educative, please I want

Very educative, please I want find out how 2006/5987 is greater than 1/3

### We know that 2006/6018 = 1/3

We know that 2006/6018 = 1/3
So, 2006/5987 must be GREATER THAN 1/3

For more on this strategy, watch https://www.greenlighttestprep.com/module/gre-arithmetic/video/1067 (starting at 2:57)

Cheers,
Brent

### I could find only one

I could find only one question in reinforcement practice first bullet. Please help, what I did wrong?

### Sorry, but I'm not sure I

Sorry, but I'm not sure I understand your question.

### what is the reason when using

what is the reason when using Reinforcement Activities practices, the practice is not highlighted any more and I couldn't use that link for second time!!

### Once you visit a linked

That said, you should be able to use the link as many times as you wish.
I just checked, and I can do that.

What happens when you click a link a second time?

Thanks I got it.

### Whenever I see big numbers

Whenever I see big numbers that you need to multiply and the calculator can't compute them (i.e. says "error"), I just use smaller numbers. For example, in the last QC question, side A is 131,047 X 480,111. I break those down into more manageable "tasty" numbers that the calculator can compute. I call this the "Feed the Calculator" technique. Give it some tasty numbers that it will find utterly delectable. (You like that witty technique? I do! Nobody has come up with it except myself!) So I would convert those numbers to 131.05 and 480.1. 131 and 480.1 are ok too. Do the same for side B and you will still get answer A.

Great idea!!

### I liked the "bigger than"

I liked the "bigger than" notation concept,