I scored a 99 on the ASVAB so I'll do my best.
For math... learn to use and convert ratios
1/3 = .33 = 33% = 9/27 and so on
Ex: (actual ASVAB test question I believe)
(if 3 people paint a house in 3 hours, then how long if there are only 2 of them? How to solve: Find out how long they can paint per hour individually... break it down - 1/3 of the house is how much each person is paining in 3 hours, but they only do 1/9 per hour) The final house painted will be 9/9ths... so 1/9 times what? = 9 X 1/9 = 9/9ths.... then divide by two because there are two of them painting. 9 divided by 2 = 4.5 or 4 1/2..... ANSWER ...4 1/2 hours.
A lot of those math questions are simple arithmetic of just adding. Some are just adding prices and converting to ratios. You have$10 to spend on milk and eggs and need to spend an equal amount on both products. If milk is twice as much as eggs then how many gallons of milk can you buy if eggs cost $1? Pretty simple math... You can get 5 cartons of eggs for $5, so Milk would be half of that or 2.5 gallons of milk.
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Algebra - basic FOIL... First, Outer, Inner, Last
(X - 8) (X + 7) =
first... X times X = X squared
outer ...X times +7 = +7X
Inner... -8 times X = -8X
last ... -8 times +7 = -56
Now add them all together for the equation, or reversethe order for the factoring.
Answer is ... X squared (+7X -8X) -56
Final answer ...X^2 -X -56
*note* X squared is the same thing as X^2
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Pythagorean theorm:
3,4,5 triangle (length of each triangle side)
(3)A squared + (4)B squared = (5)C squared
9 + 16 = 25
Square the two short sides (3,4) to equal the long side(5) squared(25)... or square the long side(5) and square one short side(3) and sub the short side from the long side to get the answer... 25 - 9 = 16 ... then just take the square root of 16 which is 4 to get the length of the missing side.
You have to practice problems out until you understand the concept... that is all math is... understanding what they are asking and knowing the formulas to solve the problem.
Good luck. Learning to use ratios should help you big time. I tore up math because of this tip from my father who is an engineer. Never had a problem with it. Practice problems and understand the concept. Once you learn concepts - math becomes very easy.