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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. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
w<0 and x>y
right triangle
hemisphere
right triangle

2. 1-1-1 (60-60-60)
straight angle
v2/2 or .71
the sum of its digits is divisible by 9
equilateral triangle

3. Product of an even number and any other number is
x%
medians of a triangle
even
b+d>c+e

4. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
the last digit is either 0 or 5
isosceles triangle
set
x>y and w>z

5. Parallel and never intersect - they have no solution at all - they are parallel with the same slope
w<0 and x>y
properties of a rectangle
inconsistent lines
equilateral triangle

6. 360°
set
x>y
determining if a number is prime
circle

7. 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.
permutations
y intercept
a+b+d=c+d
altitude of a triangle

8. The measure of an interior angle is
x - y
odd
1.4
equal to the sum of the measures of the remote exterior angles

9. xw> yz
polygon
x + y
x>y>0 and w>z>0
commutative axiom of addition and multiplication

10. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
isosceles
simultaneous equations
even
right triangle

11. 1/2bh
w>0 and x>y
x>y
properties of parallelograms
area of a triangle

12. /100 (the ______ number over 100)
x>y>0 and w>z>0
a
determining if a number is prime
percent

13. Area= bh perimeter= 2a +2b
obtuse angle
parallelogram
acute angle
y-x

14. x(y-z)
any variable
xy-xz
equal angles
right triangle

15. x > y or y< x
inconsistent lines
right triangle
perpendicular bisectors
x is greater than y

16. Volume=lwh surface area= 2wh + 2hl + 2lw
if two sets have no elements in common
expression of an odd number
negative
rectangular solid

17. If b²-4ac > 0 there are
right triangle
two solutions
midpoint of a line segment joining 2 parts
1.7

18. 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
parallel
w<0 and x>y
the sum of parts
inscribed angle

19. If b²-4ac < 0 - there are
no solutions
equal to the slope of the other
closed set
right triangle

20. y<x
x>y
implies
expression of an odd number
b+d>c+e

21. x more than y
x + y
radius of a circle
sphere
odd

22. ?
perpendicular
simultaneous equations
the percent of decrease
right triangle

23. If an equation can be put into the form y= mx +b - then
x-y/xy
b is the y-intercept
equal to the slope of the other
find the intersection of two sets

24. The product of x and y
xy
vertical angles
the percent of decrease
implies

25. ?
and
pythagorean theorem
square
positive

26. Volume= 4/3?r² surface area= 4?r²
then side b > side a
sphere
any variable
xy>0

27. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
semicircle
vertical angles
right triangle
xy< 0

28. 9-40-41
right triangle
angle
relation
angle a and angle b = angle d

29. A subset of a set is
y-x
y-x
acute angle
a set

30. 1/x + 1/y x -y ? 0
vertical angles
x+y/xy
and
Axioms

31. A closed plane whose sides are straight lines. The sum of the angles is equal to 180(n-2) - where n is the number of sides.
medians of a triangle
probability
set
polygon

32. Any integer is divisible by 5 if
x>y and w>z
the last digit is either 0 or 5
x + y
midpoint of a line segment joining 2 parts

33. Which - what
a+b+d=c+d
any variable
the sum of its digits is divisible by 9
altitude of a triangle

34. The whole equals
the sum of parts
consistent lines
rectangle
x intercept

35. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other
x>y
right triangle
vertical angles
isosceles triangle

36. Area= 1/2h(b1+b2) perimeter= b1+b2+c+d
xy
never divide by zero
commutative axiom of addition and multiplication
trapezoid

37. B²-4ac = 0 there is
one solution
the last two digits of the number make a number that is divisible by 4
a+b+d=c+d
x<0 and z=x+y

38. 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
approx sums
expression of an even number
inverse of a relation
similar triangles

39. x>z
area of a triangle
x>y and y>z
opposite the greatest side
w>0 and x>y

40. 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*)
triangle or straight line
solution set
(x-y/x)100
closed set

41. 180°
hexagon
any variable
triangle or straight line
probability

42. Angle whose sides are two radii of the circle. The vertex of this angle is the center of the circle. The number of degrees is equal to the amount of arc length that the radd intercept.
x+y/xy
odd
chord
central angle

43. (x+y)(x+y)= (x+y)²
two solutions
±vx
x²+ 2xy+y²
0 - 2 - 4 - 6 - 8

44. 1-v3- 2 (90-30-60)
expression of an even number
right triangle
diameter of circle
never divide by zero

45. xn<0 if n is odd and xn>0 if n is even
x<0
equilateral triangle
right triangle
the square of x

46. ?
perpendicular bisectors
greater than c
xy< 0
implies

47. Is a subset of every set
equilateral triangle
null set
right triangle
vertical angles

48. Is the set of the first components of the ordered pairs.
domain of a relation
coinciding lines
the perpendicular distance
angle bisector

49. y years from now
pythagorean theorem
+y
permutations
greater than c

50. C times as old as john

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