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GRE Math Strategies

Subjects : gre, math

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
xy + xz
x - y
pythagorean theorem
v(x2-x1)²+ (y2-y1)²

2. In a triangle - the greatest angles lies
x - y
relation
opposite the greatest side
negative

3. ?
y angle< x angle
-y
angle
average

4. y<x
the last digit is either 0 or 5
radius of a circle
x>y
the square of x

5. (amount of decrease/original amount) x 100
polygon
the percent of decrease
x and y
relation

6. 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
inscribed angle
expression of an even number
never divide by zero
n percent greater than x

7. (x-y)(x-y) = (x-y)²
approx sums
(y-x/x)100
equal
x²-2xy+y²

8. Any number squared or raised to an even power is
always positive or zero
tangent
right triangle
right triangle

9. Any integer is divisible by 6 if
or
it is also divisible by 2 and 3
even
rectangle

10. 1-1-1 (60-60-60)
equilateral triangle
approx products
permutations
the last digit is either 0 or 5

11. The difference between x and y
x - y
all acute angles are equal and all obtuse angles are equal
standard deviation
even

12. A°
trapezoid
1
(x-y/x)100
180 degrees

13. (sum of individual quantities or measures/ total number of quantities or measures)
average
3.16
y intercept
x>y and w>z

14. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints
the sum of parts
midpoint of a line segment joining 2 parts
the last three numbers are divisible by 8
determining if a number is prime

15. x - (n/100)x
n percent less than x
perpendicular
always positive or zero
y-x

16. Any integer is divisible by 5 if
x²-2xy+y²
the last digit is either 0 or 5
inconsistent lines
the square of x

17. The point where the line crosses the x-axis - y will always = 0 in this case
a
vertical angles
x intercept
xy< 0

18. x²
belongs to
±vx
the square of x
y-x

19. 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.
find the intersection of two sets
midpoint of a line segment joining 2 parts
medians of a triangle
altitude of a triangle

20. 3-4-5
1
right triangle
hexagon
the third side

21. x(y+z)
xy + xz
x + y
angle a and angle b = angle d
equilateral triangle

22. x>z
x>y and y>z
equilateral triangle
medians of a triangle
right triangle

23. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)
right triangle
x>y>0 and w>z>0
approx products
associative axiom of addition and multiplication

24. 180°
any variable
straight angle
right triangle
opposite the greatest side

25. Between 90° and 180°
obtuse angle
x + y
x + y
+y

26. 8-15-17
solution set
right triangle
±vx
vertical angles

27. x older than y
x + y
x intercept
y-x
the percent of decrease

28. 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)
x>y and y>z
probability
angle bisector
pythagorean theorem

29. If ?B > ?A - then
then side b > side a
the last digit is 0
Axioms
circle

30. Ax= by + C
simultaneous equations in 2 unknowns
always positive or zero
sphere
xy

31. Sin 30°
one solution
1/2
then side b > side a
right triangle

32. Then their intersection is the null or empty set - written as Ø
rectangular solid
right triangle
approx square roots
if two sets have no elements in common

33. 1. round each number being added to one more place than it is being asked. 2. add the rounded numbers. 3. round off the sum to the desired number of places
supplementary angles
expression of an odd number
approx sums
simultaneous equations in 2 unknowns

34. ?
is a subset of
simultaneous equations in 2 unknowns
straight angle
x>y

35. What % of m is n
x>y
(x/100)m= n
reflex angle
right triangle

36. The point where the line crosses the y-axis - x will always = 0 in this case
x>y
right triangle
y intercept
a

37. B>c+ d>e
diameter
medians of a triangle
b+d>c+e
itself

38. x>0 and y>0 or x<0 and y<0
xy>0
radius of a circle
one solution
and

39. Area= 1/4s² v3 perimeter= 3s altitude= 1/2s v3
diameter of circle
equilateral triangle
rectangular solid
b is the y-intercept

40. ?
right triangle
regular polygon properties
angle inscribed in semicircle
and

41. 1/2bh
area of a triangle
straight angle
acute angle
similar triangles

42. 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
central angle
vertical angles
coinciding lines
domain of a relation

43. Is - as - was - has - cost
x + y
±vx
determining if a number is prime
equals

44. x + (n/100)x
cube
inverse of a relation
3.16
n percent greater than x

45. V2/2- v2/2 - 1 (90-45-45)
isosceles triangle
a?n
never divide by zero
square

46. x>0 and y<0 or x<0 and y >0
odd
360 degrees
properties of parallelograms
xy< 0

47. Sin 60°
v3/2 or .87
1.4
parallel
c x (john'S age)

48. The distance from the center of the circle
permutations
all acute angles are equal and all obtuse angles are equal
is a subset of
radius

49. A subset of a set is
a set
radius
altitude of a triangle
angle bisector

50. The percent increase from x to y (y>x)
1/2
right triangle
(y-x/x)100
right triangle

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GRE Math Strategies

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