Math Tricks for SI Prefixes | MCAT Math 

Good luck next Friday and thanks for leaving a comment!!!

Thank you so much!!!

Thank you so much!!!

For now my current in-progress videos are mostly gen chem, math, and strategy. I will eventually get around to physics, but I don’t have anything planned at the present. If there is enough interest in physics I would be more than happy to cover topics during Monday live sessions. They aren’t as polished as the regular videos but I can get content out a lot faster since since I don’t have to create all the visuals, script them, master the audio, etc.

Thank you!!!!!

I will eventually make a video on this concept, but here is how I would go about approaching this. For math such as √1.2 you can just estimate that to closest perfect square so in this case √1.2 = √1 = 1. We know that we rounded this down so I would expect the actual answer to be a bit bigger than 1 but that is good enough for the MCAT. When taking the square root or cube root of non-divisible number you will want to change the exponent by adding zeros to the number out front. For example, √5 x 10^-5 we will turn this into √50 x 10^-6. The √50 = √49 = 7 and the √10^-6 = 10^-3 so overall √5 x 10^-5 = 7 x 10^-3. You can use the same technique for cube roots, but I suspect that the math for cube roots would be easier since these values are harder to estimate. Hope that helps!

It does, thank you again!

Of course.

I only included the MCAT relevant units so poor Ronna got left out this time.