number properties , chapter 10 (meduim practice set)

[sowjanyaangara]

Hi

I am really having a problem with questions involving absolute values.I am unable to pick different type of numbers to solve those problems especially problem 5,9,14(medium practice question set. Is there any other book for absolute values. please provide your insights.

Thanks

[tommywallach]

Hey Sowjan,

There's definitely not another book on just absolute values, if that's what you're asking. If you need more practice on those questions, you'd have to cherrypick the few that would be published in any given GRE or math book. There would never be all that many in any one place, because it's a relatively small issue.

That being said, I don't see that you'd need more questions than the ones in the book. The key to plugging in on absolute value questions is to simply recognize how they work: they can only be positive or zero (many questions revolve around the fact that they can be zero). Whatever you plug inside of them, the result will be positive or zero.

As for testing number, all absolute value questions are positive/negative questions, so simply try out negatives and positive and zero (or whatever values will create zero). If there are exponents as well, you will need to worry about things that are relevant on exponent questions (trying fractions). It should never be much more complicated than that.

Hope that helps!

-t

[sowjanyaangara]

Thank you Tommy

[tommywallach]

Glad to help!

-t