MHB How do i improve my Prealgebra ?

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Are there any good websites or tutorials in PDF format out there that helps to improve mathematics from basics ?
 
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There are a lot of online tutoring sites and which ones you may be interested in are are likely to be the ones concerning mathematics you want to study.
https://khanacademy.org is one for elementary topics up to college/university topics.. https://desmos.com has a good online graphing calculator.
 
Sorry for the late reply Greg ,
I have been searching for a good Pre algebra book for the past 1 month
I tried a lot of books but there is not a single book i can still recommend .

But this website here is a good one ,

https://www.math-only-math.com/

I have been practicing from it from yesterday .

This one is another website with a free e-book .It is an Indian website

https://nios.ac.in/online-course-material/secondary-courses/Mathematics-(211)-Syllabus.aspx

I am also trying to learn some basic quantitative aptitude questions so that i can prepare for few tests .

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I just need to find the right time to practice all these
If i spent 1 hour daily , i might be able to study all these for the tests .Thanks
 

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