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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+y) (x-y)
expression of an odd number
always positive or zero
x²-y²
negative

2. A/A¹ = B/B¹= C/C¹
similar triangles
180 degrees
perpendicular bisectors
midpoint of a line segment joining 2 parts

3. Any number squared or raised to an even power is
straight angle
the third side
always positive or zero
hemisphere

4. (amount of decrease/original amount) x 100
right triangle
the percent of decrease
x - y
xy + xz

5. 3-4-5
right triangle
rectangular solid
y-x
one solution

6. 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
circle
v(x2-x1)²+ (y2-y1)²
coinciding lines
properties of a square

7. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
is a subset of
straight angle
cylinder
if two sets have no elements in common

8. If the each element of the domain occurs only once as a FIRST component
trapezoid
180 degrees
v3/2 or .87
a relation is a function

9. The percent decrease from x to y ( y<x)
opposite the greatest side
y-x
right triangle
(x-y/x)100

10. A subset of a set is
w>0 and x>y
if the last digit of the number is 0 -2 -4 -6 -8
a set
vertical angles

11. A+b=c+ d=d
rectangular solid
similar triangles
1.4
a+b+d=c+d

12. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
x>y>0 and w>z>0
hemisphere
n percent less than x
x<0 and z=x+y

13. If b²-4ac > 0 there are
isosceles triangle
sphere
x%
two solutions

14. 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}
parallelogram
approx sums
the last digit is 0
when finding a solution set

15. If b²-4ac < 0 - there are
is a subset of
diameter
a
no solutions

16. Any arc length is less than
right triangle
x intercept
angle bisector
360 degrees

17. x less than y
inscribed angle
xy< 0
y-x
equilateral triangle

18. (x-y)(x-y) = (x-y)²
x²-2xy+y²
vertical angles
greater than c
standard deviation

19. ?
when finding a solution set
xy< 0
perpendicular
x>y and w>z

20. 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
no solutions
coinciding lines
and
n percent greater than x

21. Between 90° and 180°
isosceles triangle
simultaneous equations in 2 unknowns
obtuse angle
1.4

22. 1/2bh
area of a triangle
approx sums
1
trapezoid

23. x older than y
(x/100)m= n
x is less than y
x + y
diagonal of a square

24. 1-1-v2 (90-45-45)
right triangle
1.4
x intercept
equal to the slope of the other

25. The decrease from x to y
right angle
x-y
right triangle
triangle or straight line

26. N is what % of m
n= mx/100
the last two digits of the number make a number that is divisible by 4
equal to the slope of the other
xy< 0

27. Is always a right angle.
the last three numbers are divisible by 8
trapezoid
angle inscribed in semicircle
finding the union of sets

28. x>z
angle inscribed in semicircle
x>y and y>z
n percent less than x
isosceles

29. 8-15-17
percent
right triangle
simultaneous equations in 2 unknowns
never divide by zero

30. B²-4ac = 0 there is
x is greater than y
one solution
xy-xz
no solutions

31. Any integer is divisible by 6 if
equal
it is also divisible by 2 and 3
determining if a number is prime
1.4

32. 1/y-1/x x -y ? 0
even
x-y/xy
hemisphere
distributive axiom

33. What % of m is n
0 - 2 - 4 - 6 - 8
trapezoid
standard deviation
(x/100)m= n

34. Any line that connects two points on a circle.
w>0 and x>y
chord
equilateral triangle
the sum of its digits is divisible by 3

35. Any integer is divisible by 10 - if
inscribed angle
x-y
the last digit is 0
consistent lines

36. Volume=lwh surface area= 2wh + 2hl + 2lw
x and y
rectangular solid
1 - 3 - 5 - 7 - 9
right triangle

37. Product of two odd numbers is
itself
a<x<b
odd
v3/2 or .87

38. Sin 60°
inverse of a relation
v3/2 or .87
right triangle
solution set

39. 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.
similar triangles
hexagon
properties of a rectangle
pythagorean theorem

40. V3
percent
b+d>c+e
1.7
radius

41. A chord through the center of the circle
xy>0
belongs to
the last digit is 0
diameter

42. Any integer is divisible by 9 - if
semicircle
expression of an odd number
the sum of its digits is divisible by 9
x²+ 2xy+y²

43. The increase from x to y
x<0
all acute angles are equal and all obtuse angles are equal
diagonal of a square
y-x

44. x + (n/100)x
central angle
then side b > side a
right triangle
n percent greater than x

45. One angle is equal 90° and the other two angles are equal to the sum of 90°
right triangle
sphere
or
perpendicular

46. ?if y angle< x angle - then
a side< b side
diameter
distributive axiom
and

47. 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
all acute angles are equal and all obtuse angles are equal
finding the union of sets
rectangle
negative

48. 2k + 1
expression of an odd number
right triangle
c x (john'S age)
solution set

49. 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 -
x>y>0 and w>z>0
right angle
diameter of circle
determining if a number is prime

50. The angles opposite to sides that are equal in length have
diameter
equal angles
consistent lines
right triangle