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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= s² perimeter= 4s
percent
similar triangles
b+d>c+e
square

2. 1. solve the equation or inequality 2. use ONLY the solutions which satisfy the condition required - the set of all x such that x is greater than or equal to 10 R= {x: x=10}
when finding a solution set
triangle
hemisphere
x²-2xy+y²

3. x +z > y+z
the last three numbers are divisible by 8
x>y
coinciding lines
or

4. 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.
perpendicular bisectors
x²+ 2xy+y²
if the last digit of the number is 0 -2 -4 -6 -8
polygon

5. 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.
right triangle
angle bisector
radius
x and y

6. ?
(x/100)m= n
angle
right triangle
trapezoid

7. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
right triangle
x²+ 2xy+y²
hemisphere
the percent of decrease

8. The percent decrease from x to y ( y<x)
(x-y/x)100
approx square roots
inscribed angle
equal angles

9. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
n= mx/100
two solutions
right triangle
simultaneous equations

10. Volume=lwh surface area= 2wh + 2hl + 2lw
rectangular solid
coinciding lines
the square of x
null set

11. Product of an even number and any other number is
any variable
even
x²-2xy+y²
inscribed angle

12. y<x
expression of an even number
vertical angles
x - y
x>y

13. Sum of two odd numbers is
a side< b side
even
acute angle
rectangle

14. 7-24-25
n percent less than x
average
vertical angles
right triangle

15. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
semicircle
the percent of decrease
x percent
approx products

16. Any integer is divisible by 8 if
x + y
the last three numbers are divisible by 8
times
right triangle

17. A+b=c+ d=d
trapezoid
x%
a side< b side
a+b+d=c+d

18. 1-v3- 2 (90-30-60)
angle a and angle b = angle d
right triangle
isosceles triangle
simultaneous equations in 2 unknowns

19. 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.
is a subset of
medians of a triangle
determining if a number is prime
hemisphere

20. Sin 45°
odd
v2/2 or .71
rectangle
a<x<b

21. The quotient of any quantity (except 0) divided by zero is infinity
never divide by zero
itself
y-x
supplementary angles

22. 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
negative
hemisphere
coinciding lines
properties of parallelograms

23. 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)
negative
simultaneous equations
square
combinations

24. Area= 1/2h(b1+b2) perimeter= b1+b2+c+d
equilateral triangle
trapezoid
x²-y²
b+d>c+e

25. Is the relation with ALL ordered pairs REVERSED.
inverse of a relation
±vx
determining if a number is prime
if two sets have no elements in common

26. A¹
properties of parallelograms
x²-2xy+y²
x is greater than y
a

27. ?
1
belongs to
equilateral triangle
+y

28. C²= a²+b² and angle x and y are equal to 90°
midpoint of a line segment joining 2 parts
right triangle
any variable
the sum of its digits is divisible by 3

29. Is the set of the second components of the ordered pairs
range of a relation
equal angles
central angle
trapezoid

30. Any integer is divisible by 9 - if
the sum of its digits is divisible by 9
1.7
x>y>0 and w>z>0
the last three numbers are divisible by 8

31. x>0 and y<0 or x<0 and y >0
area of a triangle
diameter of circle
xy< 0
find the intersection of two sets

32. 3(4+1)= 3 x 4 + 3 x 1
properties of parallelograms
distributive axiom
0 - 2 - 4 - 6 - 8
equal angles

33. The difference between x and y
22/7 or 3.14
supplementary angles
diameter of circle
x - y

34. x(y-z)
supplementary angles
right triangle
xy-xz
xy>0

35. Wx<wy
x is less than y
negative reciprocal of the other
null set
w<0 and x>y

36. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²
right triangle
x-y/xy
simultaneous equations
n percent greater than x

37. x²
the percent of increase
xy
a set
the square of x

38. x>0 and y>0 or x<0 and y<0
right triangle
v(x2-x1)²+ (y2-y1)²
x is greater than y
xy>0

39. Side a +side b of a ? is
(y-x/x)100
x percent
properties of a rectangle
greater than c

40. (amount of increase/original amount) x 100
the percent of increase
quadratic equations
1.7
x>y

41. The product of an even number of negative numbers is
negative
all acute angles are equal and all obtuse angles are equal
hemisphere
positive

42. x less than y
no solutions
properties of parallelograms
y-x
v3/2 or .87

43. ?if y angle< x angle - then
a side< b side
right angle
approx square roots
always positive or zero

44. The distance from the center of the circle
properties of a rectangle
x-y
radius
always positive or zero

45. B²-4ac = 0 there is
odd
one solution
sphere
if the last digit of the number is 0 -2 -4 -6 -8

46. The angles opposite to sides that are equal in length have
(x-y/x)100
if two sets have no elements in common
implies
equal angles

47. In transversals
coinciding lines
all acute angles are equal and all obtuse angles are equal
equal angles
right triangle

48. R²
diameter of circle
greater than c
the sum of its digits is divisible by 3
sphere

49. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
v(x2-x1)²+ (y2-y1)²
circle
right triangle
x²-y²

50. ?
properties of a rhombus
when finding a solution set
22/7 or 3.14
equilateral triangle