MACRS 200 is effectively the tax name for Double Declining Balance. That is, MACRS 200 is calculated exactly like Double Declining Balance. MACRS 150 is using 1.5 instead of 2 in the Double Declining Balance Calculation. I've never actually heard of anyone say MACRS 100 before, but in the interest of driving home the point of what the MACRS depreciation methods would be equivalent to, MACRS 100 (if it existed) would be the same thing as Straight Line Depreciation. So you actually know, or should know, how to calculate all of these.
The hard part is knowing the life of the asset and which convention (ex. Mid-Month, Mid-Quarter, Half-Year) is used.
This should help: https://www.irs.gov/publications/p946/ch04.html#en_US_2013_publink1000107538
I would definitely know the asset life of following major ones though
3-year property.
Tractor units for over-the-road use.
5-year property.
Automobiles, taxis, buses, and trucks.
Computers and peripheral equipment.
Office machinery (such as typewriters, calculators, and copiers).
Any property used in research and experimentation.
Cows – Breeding cattle and dairy cattle.
Appliances, carpets, furniture, etc., used in a residential rental real estate activity.
7-year property.
Office furniture and fixtures (such as desks, files, and safes).
Agricultural machinery and equipment.
Any property that does not have a class life and has not been designated by law as being in any other class.
15-year property.
Certain improvements made directly to land or added to it (such as shrubbery, fences, roads, sidewalks, and bridges).
Any qualified leasehold improvement
Residential Rental Property – 27.5 years Can only use Straight Line
NonResidential Real Property – 39 years Can only use Straight Line
Also, just fyi you can't Section 179 anything that is on a rental.