Manhattan Math GRE Prep guaranteed
success
What to do if something is term is squared or c ubed - n
Ans✔
Take the root of the equation
Qs
What are the three x and y rules - n
Ans✔
x²-y²=(x+y) (x-y)
x²+2xy+y²= (x+y) (x+y)= (x+y)²
x²-2xy+y²= (x-y) (x-y) = (x-y)²
Qs
Can you ever split the terms of the denominator in a fraction? -
n
Ans✔
No
Qs
,What must a product of a number and it's reciprocal equal? - n
Ans✔
1
Qs
How do you define a terminating fraction? - n
Ans✔
If the denominator has only factors of 2 and or 5
Qs
Units Digits Problem - n
Ans✔
Only pay attention to the units digit of the numbers you are
working with. drop any other digits. Ex: 8²*9²* 3³ > 64, 81, 27 so
you do 4*2*7= 28
Qs
Equation for percent Increase/Decrease - n
Ans✔
,change over original= percent over 100 and Original multiplied
by 1+ Percent Increase or multiplied by 1- Percent Decrease
equals the new number.
Qs
What is a good real number when working with percents? - n
Ans✔
100
Qs
What should be my first strategy when working with successive
percents? - n
Ans✔
Real Numbers
Qs
Simple Interest - n
Ans✔
Principal *Rate*Time
Qs
, Compound Interest - n
Ans✔
P (1 plus r over n) to the exponent nt where p = principal , r =
rate in the forms of a decimal, n = number of times per year
and t equals number of years.
Qs
When should I convert to fractions? - n
Ans✔
Multiplication or Division
Qs
When should I convert to decimals or percents? - n
Ans✔
Addition, Subtraction, Estimating Numbers or Comparing
Numbers
Qs
Triangle Side Formula - n
Ans✔
success
What to do if something is term is squared or c ubed - n
Ans✔
Take the root of the equation
Qs
What are the three x and y rules - n
Ans✔
x²-y²=(x+y) (x-y)
x²+2xy+y²= (x+y) (x+y)= (x+y)²
x²-2xy+y²= (x-y) (x-y) = (x-y)²
Qs
Can you ever split the terms of the denominator in a fraction? -
n
Ans✔
No
Qs
,What must a product of a number and it's reciprocal equal? - n
Ans✔
1
Qs
How do you define a terminating fraction? - n
Ans✔
If the denominator has only factors of 2 and or 5
Qs
Units Digits Problem - n
Ans✔
Only pay attention to the units digit of the numbers you are
working with. drop any other digits. Ex: 8²*9²* 3³ > 64, 81, 27 so
you do 4*2*7= 28
Qs
Equation for percent Increase/Decrease - n
Ans✔
,change over original= percent over 100 and Original multiplied
by 1+ Percent Increase or multiplied by 1- Percent Decrease
equals the new number.
Qs
What is a good real number when working with percents? - n
Ans✔
100
Qs
What should be my first strategy when working with successive
percents? - n
Ans✔
Real Numbers
Qs
Simple Interest - n
Ans✔
Principal *Rate*Time
Qs
, Compound Interest - n
Ans✔
P (1 plus r over n) to the exponent nt where p = principal , r =
rate in the forms of a decimal, n = number of times per year
and t equals number of years.
Qs
When should I convert to fractions? - n
Ans✔
Multiplication or Division
Qs
When should I convert to decimals or percents? - n
Ans✔
Addition, Subtraction, Estimating Numbers or Comparing
Numbers
Qs
Triangle Side Formula - n
Ans✔
