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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. Sin 45°
y-x
v2/2 or .71
trapezoid
similar triangles

2. Area= l x w perimeter = (2l)(2w)
rectangle
equal to the sum of the measures of the remote exterior angles
the square of x
the sum of its digits is divisible by 9

3. Is always a right angle.
x - y
x>y and w>z
angle inscribed in semicircle
range of a relation

4. Wx>wy
w>0 and x>y
xy>0
the sum of its digits is divisible by 3
a

5. 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 -
+y
distributive axiom
angle a and angle b = angle d
determining if a number is prime

6. x less than y
radius
isosceles triangle
y-x
is a subset of

7. ? if a side is equal to b side then - the opposite corresponding angles are
it is also divisible by 2 and 3
xy< 0
right triangle
equal

8. A<x and x<b
isosceles triangle
x - y
the last digit is either 0 or 5
a<x<b

9. ?if y angle< x angle - then
null set
a side< b side
180 degrees
any variable

10. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
angle a and angle b = angle d
right triangle
vertical angles
v(x2-x1)²+ (y2-y1)²

11. /100 (the ______ number over 100)
percent
(x/100)m= n
two solutions
expression of an even number

12. If two lines are perpendicular - the slope of one is the
right triangle
negative reciprocal of the other
supplementary angles
a

13. The angles opposite to sides that are equal in length have
equal angles
polygon
x<0 and z=x+y
+y

14. The point where the line crosses the y-axis - x will always = 0 in this case
angle inscribed in semicircle
rectangle
x-y/xy
y intercept

15. Less than 90°
even
acute angle
n= mx/100
+y

16. V2/2- v2/2 - 1 (90-45-45)
3.16
+y
isosceles triangle
the percent of increase

17. 1/2bh
even
area of a triangle
triangle or straight line
any variable

18. x(y+z)
xy + xz
one solution
the last digit is either 0 or 5
c x (john'S age)

19. N is what % of m
n= mx/100
consistent lines
always positive or zero
diagonal of a square

20. Any integer is divisible by 9 - if
simultaneous equations
the sum of its digits is divisible by 9
360 degrees
average

21. Angle whose sides are two chords. The vertex of the angles lies on the circumference of the circle. The number of degrees of the angle is equal to 1/2 the intercepted arc
x²-2xy+y²
inscribed angle
a+b+d=c+d
simultaneous equations

22. Are the lines that bisect and are perpendicular to each of the three sides. The point where they meet is the center of the circumscribed circle.
even
x+y/xy
perpendicular bisectors
medians of a triangle

23. 180°
area of a triangle
x%
triangle or straight line
if two sets have no elements in common

24. Is the relation with ALL ordered pairs REVERSED.
equal
chord
inverse of a relation
cylinder

25. 1/an
it is also divisible by 2 and 3
approx square roots
a?n
3.16

26. 1. square all choices given 2. select the closes choice that is too large and the one that is too small. 3. find the average of the two choices (not of the squares) 4. square the average - if it is greater than the original number - choose the lower
polygon
x intercept
x + y
approx square roots

27. A line that is perpendicular to a radius and that passes through only one point of the circle.
tangent
right triangle
even
a+b+d=c+d

28. ?
y-x
itself
isosceles triangle
belongs to

29. If b²-4ac < 0 - there are
no solutions
diameter
x and y
right triangle

30. All sides are equal and all of whose angles are equal. 1. can be inscribed in a circle and can be circumscribed about another circle. 2. each angle is equal to the sum of the angles divided by the number of sides 180(n-2)°/n.
regular polygon properties
the last two digits of the number make a number that is divisible by 4
x>y
the sum of its digits is divisible by 3

31. If an equation can be put into the form y= mx +b - then
equals
b is the y-intercept
right triangle
no solutions

32. Set of solutions to an equation
parallel
x intercept
(x/100)m= n
solution set

33. x²
regular polygon properties
opposite the greatest side
equilateral triangle
the square of x

34. 180°
w>0 and x>y
cube
straight angle
b+d>c+e

35. The product of an odd number of negative numbers is
domain of a relation
greater than c
radius of a circle
negative

36. If the each element of the domain occurs only once as a FIRST component
area of a triangle
v(x2-x1)²+ (y2-y1)²
a relation is a function
y-x

37. 8-15-17
right triangle
find the intersection of two sets
implies
x>y and y>z

38. V2
xy-xz
1.4
finding the union of sets
x>y and y>z

39. Any arc length is less than
x<0 and z=x+y
combinations
360 degrees
equal to the slope of the other

40. If ?B > ?A - then
standard deviation
then side b > side a
straight angle
never divide by zero

41. All even numbers end in the digits of
or
right angle
determining if a number is prime
0 - 2 - 4 - 6 - 8

42. y<x
commutative axiom of addition and multiplication
y-x
x + y
x>y

43. (x+y)(x+y)= (x+y)²
0 - 2 - 4 - 6 - 8
equal
the sum of its digits is divisible by 9
x²+ 2xy+y²

44. x>0 and y>0 or x<0 and y<0
x<0 and z=x+y
x intercept
x²-2xy+y²
xy>0

45. If the base angles of a triangle are equal - the triangle is
isosceles
radius
determining if a number is prime
1.4

46. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
hexagon
approx square roots
n= mx/100
pythagorean theorem

47. V10
right triangle
find the intersection of two sets
the percent of increase
3.16

48. M=number of favorable ways n= total number of ways (two events occurring is the prob of the first times the prob of the second)
probability
inscribed angle
find the intersection of two sets
supplementary angles

49. y years ago
-y
x-y/xy
supplementary angles
right triangle

50. Between 180° and 360°
x-y/xy
the perpendicular distance
b+d>c+e
reflex angle