@quacker88 thank you very much! I understand now, and also, for the second one it is a chinese book called 《动脑筋》.

@eeveelution You are correct, however the actual solution actually unsimplifies it. It goes from \(\frac{1}{250}\) and unsimplifies it to \(\frac{100}{25} \cdot \frac{1}{1000}\). That's weird, right? Why would you make it more complicated?

Well, @brilliantyak, to answer your question, the whole problem is about converting to decimals. Converting fractions to decimals is easiest when the denominator is some power of \(10\)! So, figuring out what \(\frac{1}{250}\) is as a decimal might be a little difficult. If you can see that it's actually the same as \(\frac{4}{1000}\), way to go! \(\frac{1}{250}=\frac{4}{1000}=0.004\) is the most straightforward way to convert it to a decimal.

But, if you can't see that right away, another way to do it is what they use in the solution. Let's multiply both the numerator and denominator by 10. \(\frac{1}{250} = \frac{10}{2500} \), but that doesn't really help us. So, let's do it again! \(\frac{1}{250}=\frac{100}{25000}\), and here, notice how \(25\) divides evenly into \(100\)! Pulling out a factor of \(1000\) in the denominator gives us that \(\frac{100}{25000}=\frac{1}{1000}\cdot\frac{100}{25}\). This is another simple way to convert it to a decimal. Hope this makes sense

@energizedpanda extraordinary

@eeveelution I smell a reply chain

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Create a massive quote chain, starting from this post!

Sure why not

Ok let’s keep going...

Ok then

Be my guest

lolololololololololololololololol

dis looks cool

Yes, yes it does

9th post - can we crash the system? 🤨

Maybe, maybe not...

Cmon let’s get it rollin

cool

This is fun

hehehehehehe

DIGITAL PYRAMIDS OF GIZA!!!

Ok this is something I saw on chess.com forums as well...

:thonk:

Outstanding

yes .

lol its so long now. imagine scrolling thru it just to find something, thatll be kinda hard.

so long that it's the 4th popular topic now...

Let's make it the 1st

Noooooo Green shirt post should be first.

YESSS why there so many ppl with forum acc that didnt upvote the green shirt post? that is a disgrace

6017/6099 users i think have not done anything

actaully majority of them dont even know they have a forum acc to go with the daily challenge acc

Maybe they are bots?

I thought we covered that in the forum findings post...

Why is no one answering thisssssssss

we REALLY need the forum to be online more often

This was seven days ago... rip

Hellooooo

hiiiiiiiii

heyyyy

this is so dead
this post thing
also the forum barely any ppl go on...

Yeah sad

big bump

laughs nervously

Green shirt!!!

mhm

lol u use the quote button

thx

look at those muscle!!!!!

how can you look at the reviews?...... @The-Blade-Dancer

there was downvoting before?

lol

what everyone says:
chopin=chopping (it should be sounded like "shepang" kind of)
beethoven = bithofen (maybe should be "beitoven" ?)

@amusingcrab I belive he is friends with the math teacher

my chinese and spanish is super bad but my english is good, although I am chinese. I also know how to say hello in all the languages, cause there's kind of like a silly song about it. hola xiao shalom dobredian bonzhu nihao hello gooday gutentague..... you name it

@v4913 I understand now. Thank you very much!

@rz923 lol

@rz923 thanks