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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. (amount of decrease/original amount) x 100
(x-y/x)100
the percent of decrease
diagonal of a square
circle

2. If the base angles of a triangle are equal - the triangle is
isosceles
expression of an odd number
x>y
range of a relation

3. ?
approx sums
22/7 or 3.14
the sum of its digits is divisible by 3
times

4. The product of an odd number of negative numbers is
radius of a circle
(y-x/x)100
percent
negative

5. Any line that connects two points on a circle.
negative reciprocal of the other
even
properties of parallelograms
chord

6. 1. square all choices given 2. select the closes choice that is too large and the one that is too small. 3. find the average of the two choices (not of the squares) 4. square the average - if it is greater than the original number - choose the lower
approx square roots
right triangle
y-x
never divide by zero

7. 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
right angle
properties of parallelograms
the last three numbers are divisible by 8
equal to the sum of the measures of the remote exterior angles

8. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
pythagorean theorem
set
x is less than y
acute angle

9. Product of two odd numbers is
no solutions
odd
x-y
if the last digit of the number is 0 -2 -4 -6 -8

10. 8-15-17
right triangle
supplementary angles
perpendicular bisectors
chord

11. 1-v3- 2 (90-30-60)
negative reciprocal of the other
right triangle
x + y
hexagon

12. x older than y
x - y
x%
rectangular solid
x + y

13. Then their intersection is the null or empty set - written as Ø
1.7
if two sets have no elements in common
never divide by zero
slope of a line joining two points

14. Diagonal= sv2
c x (john'S age)
x>y and y>z
diagonal of a square
is a subset of

15. Angles that equal 180 degrees
regular polygon properties
supplementary angles
the percent of increase
1.7

16. 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
finding the union of sets
diagonal of a square
always positive or zero
360 degrees

17. 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.
regular polygon properties
right angle
x<0
x percent

18. A°
right triangle
1
rectangular solid
isosceles

19. A<x and x<b
x intercept
approx products
w<0 and x>y
a<x<b

20. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
permutations
3.16
inverse of a relation
straight angle

21. 2k + 1
expression of an odd number
inverse of a relation
never divide by zero
central angle

22. x>z
x>y and y>z
properties of a rectangle
obtuse angle
1 - 3 - 5 - 7 - 9

23. All three sides and all three angles are equal
right triangle
equilateral triangle
square
implies

24. /100 (the ______ number over 100)
equal
a<x<b
hexagon
percent

25. ?
hemisphere
b+d>c+e
the last digit is either 0 or 5
or

26. ?
right triangle
and
relation
x<0

27. (amount of increase/original amount) x 100
acute angle
polygon
the percent of increase
medians of a triangle

28. C²= a²+b² and angle x and y are equal to 90°
x>y>0 and w>z>0
determining if a number is prime
never divide by zero
right triangle

29. Any integer is divisible by 6 if
right triangle
180 degrees
the last digit is either 0 or 5
it is also divisible by 2 and 3

30. When two parallel lines are crossed by a third straight line (transversal) - then
angle a and angle b = angle d
all acute angles are equal and all obtuse angles are equal
properties of parallelograms
22/7 or 3.14

31. In a triangle - the greatest angles lies
equal to the slope of the other
odd
central angle
opposite the greatest side

32. 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
y-x
+y
x²-y²

33. x/100
vertical angles
x percent
a<x<b
it is also divisible by 2 and 3

34. The quotient of any quantity (except 0) divided by zero is infinity
never divide by zero
properties of a rectangle
x²+ 2xy+y²
x²-y²

35. 3(4+1)= 3 x 4 + 3 x 1
circle
distributive axiom
when finding a solution set
x%

36. ? if a side < b side - then
circle
consistent lines
y angle< x angle
x>y and y>z

37. (x-y)(x-y) = (x-y)²
x-y/xy
x²-2xy+y²
diagonal of a square
coinciding lines

38. The product of an even number of negative numbers is
positive
finding the union of sets
x>y
trapezoid

39. Is always a right angle.
isosceles triangle
x is less than y
angle inscribed in semicircle
a?n

40. The angles opposite to sides that are equal in length have
x intercept
equal angles
y intercept
x>y>0 and w>z>0

41. (x+y)(x+y)= (x+y)²
equal
simultaneous equations
x>y and w>z
x²+ 2xy+y²

42. The decrease from x to y
supplementary angles
x-y
one solution
altitude of a triangle

43. Area = ?r² circumference(perimeter)= 2?r
circle
angle bisector
x+y/xy
w>0 and x>y

44. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
equal
semicircle
expression of an even number
v3/2 or .87

45. A subset of a set is
x<0
all acute angles are equal and all obtuse angles are equal
a set
consistent lines

46. The percent decrease from x to y ( y<x)
(x-y/x)100
1.4
set
isosceles

47. 1/2bh
one solution
if two sets have no elements in common
area of a triangle
equilateral triangle

48. Wx<wy
x is greater than y
w<0 and x>y
x-y/xy
similar triangles

49. Is the relation with ALL ordered pairs REVERSED.
the third side
a+b+d=c+d
diagonal of a square
inverse of a relation

50. A¹
square
domain of a relation
cylinder
a