math help

SAT Math: Negative and Fraction Exponents

by Craig

In today’s lesson, we will quickly review advanced exponents. In our previous exponent lesson I briefly covered negative and fraction exponents, but I feel as if you would benefit from a quick review. Number properties are absolutely essential on the SAT. SAT prep, review, and success depends on a quick ability to break through complicated [...]

SAT Math: Simultaneous Equations

by Craig

Today we are going to talk about simultaneous equations on the SAT. Traditionally, students take what I call the isolate and dominate approach to simultaneous equations. That is, instead of seeing how the equations relate to each other in an attempt to find the right answer, students figure out what one of the values equals, [...]

SAT Math: Ratios and Proportions

by Craig

Thank you so much for checking out this ratio and proportion lesson. I want to make today’s post short and sweet. So short, and sweet, that I’ll just jump straight to the video. Ratios and Proportions Ratios and Proportions are deceptively easy. They just LOOK really hard on the test. If this video cleared up [...]

SAT Math: GCF and LCM

by Craig

The greatest common factor (GCF) and least common multiple (LCM) made me hate myself in high school. It’s funny, because they are REALLY easy for me now. It’s like, I got smarter with age. The good news for you is that you don’t have to wait until you are my age (a very respectable twenty-erghmph) [...]

SAT Math: Functions and Symbols

by Craig

Hi! I’m really glad you are here. I’m super into coffee at the moment, so I will try to make this as quick as possible so I can go jump on a bed or punch a shark. (Note: It is my lifelong dream to punch a shark in the snout.) When I was in high [...]

Tricky SAT: Two Examples Of Your Confusion in SAT Math

by Craig

**UPDATE 15 MARCH 2012** A great commenter told me that my first SAT question in the video below is ambiguous. I totally agree with her. So, instead of updating the video, I’ll just update the question here: “By approximately what percent OF HIS ORIGINAL WEIGHT would Craig have to gain back to get to his [...]

SAT Math: Mean, Median, and Mode

by Craig

SAT questions come in all kinds of wonderfully complicated shapes and sizes. Some problems require you to simply solve for x, find an area of a circle, or factor a couple of numbers and master those rules of divisibility. Today, I want to review another concept that tends to creep up on the SAT often: [...]

SAT Math Basics: Solve for X and Inequalities

by Craig

Solving for X is pretty much an SAT establishment. If you cannot quickly and without error find X, your chances at a killer SAT score are totally not awesome. Just imagine getting the following fairly simple question: 3x – 7 = 2 If you do not know that x = 3, then you are in [...]

SAT Math Basics: The Rules of Divisibility and Percent Change

by Craig

In my last post I talked about some of the very basic SAT math concepts. Today, I want to do the same thing, but make the topic a bit more complicated. Today, we are going to break through the rules of divisibility, percents, fractions, and percent change. Students who cannot quickly convert decimals into fractions [...]

SAT Math Basics: What You Should Know, But Probably Don’t

by Craig

There are a finite number of concepts covered on the SAT. The College Board quote claiming that the only prep you should do for the SAT is to take rigorous high school classes is not without merit: the idea is to test what you should already know so if you do well in high school, [...]

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