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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. Every set is a subset of
odd
percent
equilateral triangle
itself

2. Volume= 4/3?r² surface area= 4?r²
a?n
sphere
the square of x
v(x2-x1)²+ (y2-y1)²

3. 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)
probability
x>y and y>z
rectangular solid
the percent of increase

4. The sum of any two sides of a triangle is greater than
null set
right triangle
properties of parallelograms
the third side

5. 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.
altitude of a triangle
the last two digits of the number make a number that is divisible by 4
approx square roots
n percent less than x

6. If b²-4ac > 0 there are
two solutions
x-y/xy
the sum of its digits is divisible by 9
approx products

7. Integer is divisible by 2
if the last digit of the number is 0 -2 -4 -6 -8
coinciding lines
associative axiom of addition and multiplication
positive

8. x²
the square of x
(x-y/x)100
x + y
right triangle

9. 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
chord
properties of a square
w<0 and x>y
x²-2xy+y²

10. All angles are right angles and diagonals are equal 1.each pair of opposite sides are equal 2. the diagonals bisect eachother 3. the opposite angles are equal 4. one diagonal divides it into two congruent triangles and two diagonals divides it into
properties of a rectangle
±vx
positive
0 - 2 - 4 - 6 - 8

11. x more than y
properties of a rhombus
even
parallelogram
x + y

12. M= y2-y1/x2-x1
slope of a line joining two points
always positive or zero
equal angles
vertical angles

13. 1-1-1 (60-60-60)
the square of x
equilateral triangle
hexagon
diameter

14. 1/an
1.7
a?n
right triangle
0 - 2 - 4 - 6 - 8

15. V2/2- v2/2 - 1 (90-45-45)
inscribed angle
permutations
equals
isosceles triangle

16. Area= 1/4s² v3 perimeter= 3s altitude= 1/2s v3
x²-2xy+y²
standard deviation
solution set
equilateral triangle

17. Are the lines drawn from each vertex to the midpoint of its opposite side. they cross at a point that divides each individual ______into two parts.
medians of a triangle
expression of an odd number
supplementary angles
consistent lines

18. When the elements of a set are ordered pairs
relation
when finding a solution set
the third side
diagonal of a square

19. Sin 60°
x-y
v3/2 or .87
equilateral triangle
right triangle

20. 1. subtract each number from the average of the numbers 2. square the result of each of the numbers 3. add all those results and then divide by how many numbers you originally had. 4. take the square root of that result
the square of x
x-y/xy
x + y
standard deviation

21. Distributive axiom - commutative axiom of addition and multiplication - associative axioms of addition and multiplication
x intercept
Axioms
right triangle
a

22. Set of solutions to an equation
the sum of its digits is divisible by 3
solution set
right triangle
180 degrees

23. Write down every member that the two sets have in common. The intersection of the sets A and B is a set written AnB
x + y
b is the y-intercept
find the intersection of two sets
always positive or zero

24. x younger than y
x - y
equal angles
medians of a triangle
x²-y²

25. y years ago
properties of a square
x>y
-y
set

26. B>c+ d>e
no solutions
x + y
central angle
b+d>c+e

27. B²-4ac = 0 there is
no solutions
xy + xz
square
one solution

28. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)
central angle
associative axiom of addition and multiplication
vertical angles
x>y

29. xn<0 if n is odd and xn>0 if n is even
-y
angle bisector
x<0
never divide by zero

30. (amount of increase/original amount) x 100
square
all acute angles are equal and all obtuse angles are equal
the percent of increase
1.7

31. Any integer is divisible by 5 if
x + y
circle
the last digit is either 0 or 5
right triangle

32. x + y
finding the union of sets
right triangle
x and y
domain of a relation

33. x>z
the last digit is 0
x>y and y>z
triangle
coinciding lines

34. Any integer is divisible by 4 - if
permutations
quadratic equations
the last two digits of the number make a number that is divisible by 4
1.7

35. Any arc length is less than
domain of a relation
w>0 and x>y
simultaneous equations
360 degrees

36. 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.
x+y/xy
x - y
hexagon
trapezoid

37. A°
properties of a square
1
parallelogram
approx products

38. A chord through the center of the circle
approx products
diameter
acute angle
xy>0

39. All three sides and all three angles are equal
x - y
negative reciprocal of the other
obtuse angle
equilateral triangle

40. Is the set of the first components of the ordered pairs.
area of a triangle
domain of a relation
find the intersection of two sets
simultaneous equations in 2 unknowns

41. The sum of the interior angles is
polygon
n percent less than x
180 degrees
x intercept

42. Ax= by + C
a side< b side
1 - 3 - 5 - 7 - 9
cylinder
simultaneous equations in 2 unknowns

43. A+b=c+ d=d
closed set
a+b+d=c+d
distributive axiom
hexagon

44. The product of an even number of negative numbers is
positive
isosceles
similar triangles
negative

45. 360°
circle
right triangle
simultaneous equations
associative axiom of addition and multiplication

46. N= combinations taken (order does not matter) r= rate at a time nCr or C(n -r) = (n)!/(r)! (remember to cancel out common numbers)
1 - 3 - 5 - 7 - 9
combinations
the perpendicular distance
even

47. The distance from the center of the circle
properties of a square
medians of a triangle
percent
radius

48. 1.each pair of opposite sides are equal 2. the diagonals bisect eachother 3. the opposite angles are equal 4. one diagonal divides it into two congruent triangles and two diagonals divides it into two pairs of congruent triangles
x-y/xy
triangle
properties of parallelograms
domain of a relation

49. Is always a right angle.
a set
commutative axiom of addition and multiplication
opposite the greatest side
angle inscribed in semicircle

50. If ?B > ?A - then
then side b > side a
(x-y/x)100
y intercept
range of a relation