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You will need to learn the exponent rules in preparation for the SAT. http://www.preppedandpolished.com Alexis Avila Founder of Prepped & Polished, LLC in South Natick, Massachusetts, teaches you the exponent rules and shows you the four common mistakes many people make with exponent rules.
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Full Word-for-Word Transcription
Sometimes, students make this mistake: If you have division with exponents.
If you have the same base for a numerator and denominator, but it’s X6 /
X3. Sometimes, students will say, “I’m just going to divide those
exponents.” What they say wrong is they’ll say it’s X6/3. X6/3 = X2. That
is completely wrong, do not do that. What you want to do when you divide
exponents, you subtract the exponents from one another. X6 / X3 is the same
thing as X6-3; X3, final answer.
One last error I want to show you, that students often make, is if you have
(2X)3. What students often do wrong is they will only apply the exponent to
the X. They’ll say “That is 2X3, final answer.” That is completely false.
Do not do that. What you’re going to do is apply the exponent to each
entity in the parentheses. The answer to (2X)3 is the same thing is 23 x X3
= 8X3, final answer.
Just go over those 4 rules I taught you, and you shouldn’t make any
careless mistakes when you see an exponent problem on the SAT. Good luck on
your test. I’ll talk to you soon.
Do the exponent rules confuse you? Which of the exponent rules trips you up the most?
Post your tips/comments below.
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Alexis Avila Founder/President of Prepped & Polished offers advice on how to avoid careless mistakes on the SAT Sentence Error Questions on the SAT Writing Grammar Section.
Before circling an answer because it sounds wrong, come up with a valid replacement for the incorrect grammar.
Hi everyone, Alexis Avila found of Prepped and Polished LLC here in Boston.
Now 18 out of the 49 grammar questions on the SAT are sentence error
questions. What a lot of students do, of all levels, is they tend to read
the question, and then if something sounds funny in the sentence, they’ll
circle the answer and then they’ll just move on.
If you want to avoid careless mistakes on the sentence error portion of the
test, you have to work really methodically. So this is what I recommend
that you do with sentence error questions. You want to first read the
sentence and narrow in on the bad grammar.
So “Martha is the woman who sat on the couch.” that sounds pretty good,
“between you and I at the meeting, and who kept asking questions about
American Idol.” Well, we know that after a preposition between, you can’t
have the subject case pronoun after a preposition. So this is what I want
you to do. Instead of just choosing B because it sounds funny, I want you
to really know why we are going to choose B. So I want you to have a valid
replacement for the answer.
So after the preposition between, the pronoun shouldn’t be you and I, it
should be you and me. You need the object case form of the pronoun after a
preposition. So before you actually go ahead and choose B, I want you to
slash the incorrect answer, slash the mistake, and replace it with the
correct grammar. Then choose B and move on confidently through the sentence
error portion of the test. So do those things, and I guarantee you’re avoid
careless mistakes on the sentence errors.
I’ll talk to you soon.
Did you find this SAT Grammar tip helpful? What are some other ways to avoid careless grammar mistakes on the SAT?