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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>0 and y<0 or x<0 and y >0
altitude of a triangle
y-x
properties of a rectangle
xy< 0

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
solution set
(x-y/x)100
180 degrees
finding the union of sets

3. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
x + y
regular polygon properties
relation
simultaneous equations

4. Is the set of the first components of the ordered pairs.
any variable
right triangle
domain of a relation
triangle

5. 1/2bh
is a subset of
even
xy>0
area of a triangle

6. x(y-z)
xy-xz
isosceles triangle
positive
equilateral triangle

7. Is the relation with ALL ordered pairs REVERSED.
triangle
x-y/xy
then side b > side a
inverse of a relation

8. Two tangents to a circle from the same point outside of the circle are always
x²+ 2xy+y²
medians of a triangle
equal
approx square roots

9. (sum of individual quantities or measures/ total number of quantities or measures)
percent
average
b is the y-intercept
3.16

10. In a triangle - if ?c(interior angle in triangle) and ?d(exterior angle out of triangle) are supplmentary angles - than ?a and ?b are remote interior angles to <d - thus - a +b+c = 180 (triangle) c+d = 180 (supplementary angles)
is a subset of
acute angle
angle a and angle b = angle d
x+y/xy

11. Set of solutions to an equation
right triangle
angle a and angle b = angle d
rectangular solid
solution set

12. 1-v3- 2 (90-30-60)
odd
x>y
w>0 and x>y
right triangle

13. Product of an even number and any other number is
x + y
always positive or zero
x²-y²
even

14. Is always a right angle.
angle inscribed in semicircle
hemisphere
odd
expression of an odd number

15. (amount of increase/original amount) x 100
negative
the percent of increase
right triangle
hemisphere

16. Ax= by + C
right triangle
associative axiom of addition and multiplication
coinciding lines
simultaneous equations in 2 unknowns

17. Sin 30°
perpendicular
a set
1/2
it is also divisible by 2 and 3

18. The sum of any two sides of a triangle is greater than
the third side
x²-2xy+y²
x is less than y
x>y

19. Any integer is divisible by 4 - if
y-x
it is also divisible by 2 and 3
the last two digits of the number make a number that is divisible by 4
x - y

20. Sum of two odd numbers is
right triangle
n percent greater than x
even
properties of a rectangle

21. Any integer is divisible by 3 - if
circle
radius
x>y and w>z
the sum of its digits is divisible by 3

22. The distance from the center of the circle
x>y and w>z
radius
even
equal to the slope of the other

23. x + (n/100)x
n percent greater than x
finding the union of sets
when finding a solution set
properties of parallelograms

24. 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
if the last digit of the number is 0 -2 -4 -6 -8
inscribed angle
isosceles triangle
coinciding lines

25. A/A¹ = B/B¹= C/C¹
slope of a line joining two points
Axioms
rectangular solid
similar triangles

26. 8-15-17
sphere
right triangle
w>0 and x>y
properties of a rectangle

27. A°
one solution
pythagorean theorem
1
the sum of its digits is divisible by 9

28. 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
any variable
perpendicular bisectors
approx square roots
determining if a number is prime

29. Less than 90°
properties of a square
approx products
acute angle
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.
two solutions
obtuse angle
regular polygon properties
slope of a line joining two points

31. B²-4ac = 0 there is
x-y/xy
diagonal of a square
one solution
combinations

32. x +z > y+z
and
semicircle
x>y
expression of an even number

33. Any integer is divisible by 8 if
inconsistent lines
simultaneous equations
the last three numbers are divisible by 8
approx products

34. Is the set of the second components of the ordered pairs
range of a relation
x and y
rectangle
x>y and w>z

35. Any integer is divisible by 5 if
is a subset of
w<0 and x>y
the last digit is either 0 or 5
x>y and y>z

36. x younger than y
x is greater than y
similar triangles
x - y
even

37. Any integer is divisible by 9 - if
the sum of its digits is divisible by 9
diameter of circle
x - y
x and y

38. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
radius of a circle
hemisphere
w>0 and x>y
x<0

39. 9-40-41
any variable
set
right triangle
1/2

40. A chord through the center of the circle
x is less than y
diameter
x + y
x - y

41. Product of two odd numbers is
slope of a line joining two points
xy-xz
equal
odd

42. (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
even
xy
1.4

43. 1. solve the equation or inequality 2. use ONLY the solutions which satisfy the condition required - the set of all x such that x is greater than or equal to 10 R= {x: x=10}
when finding a solution set
1.7
or
a?n

44. The point where the line crosses the y-axis - x will always = 0 in this case
negative
y intercept
domain of a relation
x + y

45. The whole equals
one solution
xy + xz
percent
the sum of parts

46. In a triangle - the greatest angles lies
parallel
x + y
opposite the greatest side
radius of a circle

47. The measure of an interior angle is
v(x2-x1)²+ (y2-y1)²
equal to the sum of the measures of the remote exterior angles
closed set
altitude of a triangle

48. 360°
xy
even
circle
c x (john'S age)

49. C²= a²+b² and angle x and y are equal to 90°
diagonal of a square
right triangle
b is the y-intercept
percent

50. 1/x + 1/y x -y ? 0
diameter
x+y/xy
n percent less than x
one solution