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GRE Math Strategies

Subjects : gre, math

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. The point where the line crosses the x-axis - y will always = 0 in this case
cube
radius of a circle
x intercept
n= mx/100

2. Write down every member in one or both of the sets - the union of two sets is a new set. the union of set A and B is written as A?B
a<x<b
rectangle
x percent
finding the union of sets

3. Diagonals divide into 6 equilateral triangles - the sides are equal to the sides of the ________. if inscribed in a circle - the length of each side is equal to the length of the radius of the circle.
hexagon
solution set
odd
x%

4. B>c+ d>e
0 - 2 - 4 - 6 - 8
equal to the slope of the other
b+d>c+e
positive

5. x>0 and y<0 or x<0 and y >0
properties of parallelograms
3.16
xy< 0
vertical angles

6. A¹
0 - 2 - 4 - 6 - 8
a
±vx
(x-y/x)100

7. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
x>y and y>z
set
x intercept
all acute angles are equal and all obtuse angles are equal

8. N= combinations taken (order does not matter) r= rate at a time nCr or C(n -r) = (n)!/(r)! (remember to cancel out common numbers)
x²-2xy+y²
angle a and angle b = angle d
any variable
combinations

9. The difference between x and y
is a subset of
even
x - y
x intercept

10. A chord through the center of the circle
when finding a solution set
360 degrees
diameter
xy>0

11. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints
midpoint of a line segment joining 2 parts
slope of a line joining two points
v(x2-x1)²+ (y2-y1)²
the percent of decrease

12. | |
negative reciprocal of the other
b+d>c+e
parallel
y-x

13. ? if a side is equal to b side then - the opposite corresponding angles are
cube
xy-xz
equal
(x/100)m= n

14. C²= a²+b² and angle x and y are equal to 90°
right triangle
1.4
3.16
1.7

15. 1. determine a rough approximation of the square root of the number. 2. divide the number by all the primes that are less than the approx square root. If the number is not divisible by ANY of the these primes - then it is prime. If it IS divisible -
determining if a number is prime
equal to the slope of the other
always positive or zero
right angle

16. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
any variable
xy>0
semicircle
n= mx/100

17. Is a rectangular rhombus 1. all four sides are equal 2. opposite pairs of sides are parallel 3. diagonals are equal - are perpendicular to each other - and bisect each other. 4. all the angles are right triangles 5. diagonals intersect the vertices a
properties of a square
negative
22/7 or 3.14
isosceles triangle

18. Any number squared or raised to an even power is
±vx
hemisphere
xy< 0
always positive or zero

19. Is always a right angle.
angle inscribed in semicircle
simultaneous equations
isosceles triangle
v3/2 or .87

20. 5+3= 3+5 and 5 x 3= 3 x 5
the third side
properties of a rhombus
percent
commutative axiom of addition and multiplication

21. Any integer is divisible by 4 - if
xy>0
n percent less than x
inconsistent lines
the last two digits of the number make a number that is divisible by 4

22. Intersect at only one point - the point is the only solution to the pair of equations
(y-x/x)100
average
diameter of circle
consistent lines

23. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
simultaneous equations
y angle< x angle
parallel
y-x

24. 1. subtract each number from the average of the numbers 2. square the result of each of the numbers 3. add all those results and then divide by how many numbers you originally had. 4. take the square root of that result
even
standard deviation
implies
finding the union of sets

25. x+w> y+z
straight angle
x>y and w>z
average
positive

26. B²-4ac = 0 there is
any variable
one solution
equal angles
xy + xz

27. The point where the line crosses the y-axis - x will always = 0 in this case
associative axiom of addition and multiplication
x is greater than y
y intercept
polygon

28. The product of an odd number of negative numbers is
straight angle
negative
x is less than y
null set

29. 2k
expression of an even number
opposite the greatest side
right triangle
the sum of parts

30. Area= s² perimeter= 4s
xy-xz
square
x<0
3.16

31. If the base angles of a triangle are equal - the triangle is
xy< 0
parallelogram
isosceles
angle bisector

32. The case where the two equations are equivalent (just two different forms of the same mathematical relation). Any point that satisfies either of the equations - automatically satisfies both
x + y
coinciding lines
inconsistent lines
inverse of a relation

33. Any integer is divisible by 5 if
x<0
the perpendicular distance
xy< 0
the last digit is either 0 or 5

34. (sum of individual quantities or measures/ total number of quantities or measures)
average
semicircle
xy< 0
set

35. When the elements of a set are ordered pairs
b is the y-intercept
relation
(x/100)m= n
x + y

36. Area= 1/2bh perimeter= a+b+c
solution set
parallelogram
w<0 and x>y
triangle

37. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
then side b > side a
permutations
x percent
(x/100)m= n

38. If b²-4ac < 0 - there are
right triangle
a set
the last digit is either 0 or 5
no solutions

39. The product of an even number of negative numbers is
x and y
positive
(y-x/x)100
a+b+d=c+d

40. 3-4-5
right triangle
perpendicular bisectors
the last three numbers are divisible by 8
properties of parallelograms

41. Between 180° and 360°
opposite the greatest side
reflex angle
a relation is a function
implies

42. A°
triangle or straight line
1
right triangle
equilateral triangle

43. x/100
equal angles
obtuse angle
x%
equal

44. 1/2bh
properties of parallelograms
always positive or zero
area of a triangle
approx sums

45. z>y
no solutions
determining if a number is prime
x<0 and z=x+y
set

46. The percent decrease from x to y ( y<x)
tangent
combinations
(x-y/x)100
+y

47. Any line that connects two points on a circle.
chord
itself
n percent greater than x
implies

48. Volume= e(edge)³ surface area= 6e²
cube
right triangle
1.4
regular polygon properties

49. Sum of two odd numbers is
even
x - y
inscribed angle
inverse of a relation

50. x/100
x percent
right triangle
area of a triangle
x-y/xy