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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. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²
determining if a number is prime
right triangle
pythagorean theorem
cube

2. The point where the line crosses the y-axis - x will always = 0 in this case
a set
y intercept
times
x²+ 2xy+y²

3. x+w> y+z
right triangle
it is also divisible by 2 and 3
a set
x>y and w>z

4. (amount of increase/original amount) x 100
x+y/xy
the percent of increase
right triangle
x>y and y>z

5. Is the relation with ALL ordered pairs REVERSED.
properties of parallelograms
any variable
360 degrees
inverse of a relation

6. 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.
the percent of increase
perpendicular bisectors
find the intersection of two sets
is a subset of

7. V2/2- v2/2 - 1 (90-45-45)
rectangular solid
the percent of increase
set
isosceles triangle

8. x²
tangent
right triangle
the square of x
permutations

9. The distance from the center of the circle
angle inscribed in semicircle
range of a relation
radius
a

10. Sin 60°
v3/2 or .87
perpendicular bisectors
set
a+b+d=c+d

11. The product of an even number of negative numbers is
radius of a circle
±vx
right triangle
positive

12. Is drawn from the vertices perpendicular to the opposite sides. The lengths of these lines are useful in calculating the area of the trinagle since the area of the triangle is 1/2bh and the height and the _____are the same.
polygon
x-y
altitude of a triangle
(x/100)m= n

13. Any integer is divisible by 8 if
x + y
the last three numbers are divisible by 8
the perpendicular distance
x%

14. 5-12-13
1.7
radius
approx square roots
right triangle

15. 2k
odd
1/2
expression of an even number
if two sets have no elements in common

16. Any integer is divisible by 5 if
the last digit is either 0 or 5
v(x2-x1)²+ (y2-y1)²
rectangle
y intercept

17. A<x and x<b
inconsistent lines
cylinder
a<x<b
Axioms

18. 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.
b is the y-intercept
regular polygon properties
(x-y/x)100
+y

19. 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)
equals
angle a and angle b = angle d
xy< 0
tangent

20. 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
x²-y²
distributive axiom
the percent of decrease

21. The lines that divide each angle of the triangle into two equal parts. these lines meet in a point that is the center of a circle inscribed in the triangle.
is a subset of
properties of a square
angle bisector
equal to the slope of the other

22. A line that is perpendicular to a radius and that passes through only one point of the circle.
a
similar triangles
tangent
right triangle

23. x +z > y+z
x + y
x>y
1.4
two solutions

24. The sum of the interior angles is
3.16
0 - 2 - 4 - 6 - 8
y-x
180 degrees

25. xn<0 if n is odd and xn>0 if n is even
approx square roots
rectangle
x<0
if two sets have no elements in common

26. What % of m is n
closed set
(x/100)m= n
obtuse angle
equals

27. C times as old as john

28. All three sides and all three angles are equal
midpoint of a line segment joining 2 parts
equals
xy>0
equilateral triangle

29. Intersect at only one point - the point is the only solution to the pair of equations
consistent lines
any variable
even
times

30. 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*)
closed set
times
the percent of increase
3.16

31. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
coinciding lines
similar triangles
finding the union of sets
simultaneous equations

32. Volume=lwh surface area= 2wh + 2hl + 2lw
percent
rectangle
-y
rectangular solid

33. The increase from x to y
cylinder
all acute angles are equal and all obtuse angles are equal
belongs to
y-x

34. In transversals
all acute angles are equal and all obtuse angles are equal
a
equilateral triangle
b is the y-intercept

35. 180°
x%
straight angle
triangle
the sum of its digits is divisible by 3

36. Area= bh perimeter= 2a +2b
parallelogram
x<0 and z=x+y
x²+ 2xy+y²
y-x

37. Side a +side b of a ? is
hexagon
polygon
1.7
greater than c

38. 180°
triangle or straight line
the last three numbers are divisible by 8
regular polygon properties
x - y

39. If two lines are parallel - the slope of one is
equal to the slope of the other
or
opposite the greatest side
simultaneous equations

40. y years ago
a?n
-y
xy
equilateral triangle

41. If y²= x - then y =
±vx
b is the y-intercept
1 - 3 - 5 - 7 - 9
find the intersection of two sets

42. Less than 90°
right triangle
acute angle
diagonal of a square
semicircle

43. Is - as - was - has - cost
1
equal to the sum of the measures of the remote exterior angles
equals
v2/2 or .71

44. Is the set of the second components of the ordered pairs
range of a relation
Axioms
triangle
approx products

45. If b²-4ac < 0 - there are
x + y
no solutions
a relation is a function
x-y/xy

46. V10
(y-x/x)100
properties of a rectangle
semicircle
3.16

47. Volume= 4/3?r² surface area= 4?r²
sphere
the last two digits of the number make a number that is divisible by 4
commutative axiom of addition and multiplication
circle

48. 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
1 - 3 - 5 - 7 - 9
the square of x
xy>0
coinciding lines

49. The quotient of any quantity (except 0) divided by zero is infinity
even
angle inscribed in semicircle
x is less than y
never divide by zero

50. The point where the line crosses the x-axis - y will always = 0 in this case
the third side
x intercept
any variable
no solutions