I summarized the 13 most difficult problems that seems to be the new SAT in 2016 and created a strategy and answer for each question. These are SAT mathematics puzzles of the University Council SAT Practice Test. This means that understanding is best suited for learning goals. The third and fourth parts of SAT are always mathematical parts. You can not use a calculator in the first math subsection (labeled "3"), but you can use a calculator in the second math subsection (labeled "4"). Do not worry too much about parts without a calculator. If you do not allow you to use the calculator on the problem, it means that you do not need a calculator to answer it.
Practice diagnostic tests for the soil through the Kahn Academy. As the SAT has recently changed, the exam preparation company must simulate a new SAT exercise - they can not rely on the real problem of the old exam. From our point of view, this is not ideal. At the moment, the Kahn Academy is a simple exam preparation organization that can take practical exercises written by the University Council (Creator of SAT) through the University Council, and these are free. We do not recommend preparing both tests for a long time. You can spend a lot of time on both diagnostics in advance, choose the test that is most suitable for it, and then concentrate on preparing the test for it. Since parents tend to support either test (usually based on my long experience), this tip is also designed to help parents get rid of prejudice