On the SAT you have to solve each math problem in about 1 to 2 minutes. It is impossible to study maths properly by just reading and listening. This cool math trick for multiplication is amazing - you will be solving math with no problem.
Its not just addition when it comes to maths its like everything that is related to mathematical is troubling.
Write the three under those two numbers to the left of the five that you just wrote. The ones that are called hard are those that have a background you dont yet know. This was voted on Quora as one of the most difficult SAT math problems. We somehow grow up thinking that either youre born with the math gene or youre not.