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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. x= -b + vb²-4ac/2a and x = -b - vb²-4ac/2a
quadratic equations
parallelogram
regular polygon properties
if the last digit of the number is 0 -2 -4 -6 -8

2. Diagonal= sv2
x and y
the perpendicular distance
angle bisector
diagonal of a square

3. 9-40-41
inverse of a relation
range of a relation
right triangle
belongs to

4. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
a set
simultaneous equations
hemisphere
x is greater than y

5. 1/y-1/x x -y ? 0
regular polygon properties
x intercept
x-y/xy
the sum of its digits is divisible by 9

6. Two tangents to a circle from the same point outside of the circle are always
c x (john'S age)
find the intersection of two sets
equal
equal to the slope of the other

7. The sum of the interior angles is
180 degrees
diagonal of a square
hexagon
central angle

8. C²= a²+b² and angle x and y are equal to 90°
right triangle
solution set
x percent
w<0 and x>y

9. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
square
then side b > side a
permutations
parallelogram

10. Integer is divisible by 2
the third side
if the last digit of the number is 0 -2 -4 -6 -8
or
times

11. Any integer is divisible by 3 - if
two solutions
sphere
simultaneous equations in 2 unknowns
the sum of its digits is divisible by 3

12. 2k + 1
xy< 0
obtuse angle
combinations
expression of an odd number

13. The sum of any two sides of a triangle is greater than
the third side
right triangle
odd
it is also divisible by 2 and 3

14. The whole equals
equilateral triangle
probability
the sum of parts
and

15. Every set is a subset of
semicircle
positive
itself
xy>0

16. If two lines are parallel - the slope of one is
equal to the slope of the other
set
1
diameter of circle

17. 2k
central angle
expression of an even number
x percent
right angle

18. If the base angles of a triangle are equal - the triangle is
x<0 and z=x+y
1.7
x is greater than y
isosceles

19. Sin 30°
1/2
right triangle
angle a and angle b = angle d
diameter

20. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
regular polygon properties
a<x<b
semicircle
x - y

21. 1-1-v2 (90-45-45)
cube
angle inscribed in semicircle
right triangle
y intercept

22. Product of an even number and any other number is
perpendicular bisectors
1/2
even
domain of a relation

23. When two parallel lines are crossed by a third straight line (transversal) - then
the square of x
triangle or straight line
right triangle
all acute angles are equal and all obtuse angles are equal

24. If two lines are perpendicular - the slope of one is the
x intercept
set
negative reciprocal of the other
x>y and w>z

25. Angles directly across each other are equal
then side b > side a
vertical angles
even
a set

26. 1/2d
simultaneous equations in 2 unknowns
1.4
tangent
radius of a circle

27. Any integer is divisible by 4 - if
the last two digits of the number make a number that is divisible by 4
x - y
simultaneous equations in 2 unknowns
x is less than y

28. A closed plane whose sides are straight lines. The sum of the angles is equal to 180(n-2) - where n is the number of sides.
right triangle
never divide by zero
x+y/xy
polygon

29. The difference between x and y
equilateral triangle
-y
1.4
x - y

30. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
x intercept
even
cylinder
x and y

31. xw> yz
x>y>0 and w>z>0
x is less than y
b is the y-intercept
x is greater than y

32. y<x
simultaneous equations in 2 unknowns
v(x2-x1)²+ (y2-y1)²
x>y
x<0 and z=x+y

33. x(y-z)
expression of an odd number
xy-xz
domain of a relation
x intercept

34. Sin 60°
v3/2 or .87
x percent
equal to the sum of the measures of the remote exterior angles
parallel

35. x>z
1.4
x>y and y>z
right triangle
(x/100)m= n

36. Are the lines drawn from each vertex to the midpoint of its opposite side. they cross at a point that divides each individual ______into two parts.
medians of a triangle
properties of a rhombus
w>0 and x>y
circle

37. (x+y)(x+y)= (x+y)²
right triangle
closed set
x²+ 2xy+y²
±vx

38. 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
circle
equilateral triangle
the third side
standard deviation

39. If y²= x - then y =
±vx
x>y
equilateral triangle
x²+ 2xy+y²

40. If under the operation - any two members of the set constitute an element of the set ( * the product of the elements multiplied by themselves must also be an element of the set*)
semicircle
a<x<b
closed set
n percent less than x

41. ?
x>y and w>z
similar triangles
commutative axiom of addition and multiplication
implies

42. Area= l x w perimeter = (2l)(2w)
rectangle
x²-2xy+y²
x%
two solutions

43. Of
times
greater than c
x + y
radius of a circle

44. x +z > y+z
perpendicular
commutative axiom of addition and multiplication
closed set
x>y

45. M= y2-y1/x2-x1
right triangle
slope of a line joining two points
the third side
x+y/xy

46. The product of an even number of negative numbers is
positive
radius
the square of x
vertical angles

47. x > y or y< x
x is greater than y
opposite the greatest side
-y
then side b > side a

48. Area= s² perimeter= 4s
never divide by zero
square
perpendicular
reflex angle

49. ?
right angle
diagonal of a square
x<0
and

50. 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
positive
no solutions
inverse of a relation
coinciding lines