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One huge problem I have with learning mathematics is that I have not got enough problems to solve, with answers. Is there a resource that I can get hundreds of mathematical questions, small questions, big questions all the way through from algebra to calculus that I can work my way through?

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While I haven't used it, I've heard good things about Brilliant – Robert Mastragostino Jan 6 '13 at 8:16
@JasperLoy I'm trying to teach myself mathematics from algebra up to calculus. Hopefully that makes some sense, I want a resource that doesn't have gaps in the material going up to calculus – Joseph Jan 6 '13 at 8:24
Buy a textbook. Or, if you're a poor college student like me, "buy" a textbook. – GMB Jan 6 '13 at 8:26
up vote 6 down vote accepted

Check out Paul's Online Math Notes with notes and many worked examples on algebra, calculus, linear algebra and differential equations.

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There is the Schaum Series. I didn't use it personally but I know people that liked it.

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The Alcumus Learning System by Art of Problem Solving is very effective with problems ranging from Algebra to Number Theory. You can also do questions with KhanAcademy as well by first watching videos and then answering questions. For testing your guts out, try

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If you don't mind using old textbooks, one of the things you can try is to google, in google-books (or also in google-web), the phrase "key to" along with various topics you're interested in. For example, look at the hits from these (title) searches: key to trigonometry ...... key to calculus ...... key to algebra. For those keys that you can download or view fully on-line, then google for the corresponding textbook (to get the problem statements; some keys include them and some don't).

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