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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. Sin 30°
never divide by zero
1/2
equal to the sum of the measures of the remote exterior angles
inscribed angle

2. The product of an odd number of negative numbers is
negative
right triangle
3.16
relation

3. (amount of increase/original amount) x 100
the percent of increase
right triangle
isosceles
n percent less than x

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.
then side b > side a
x + y
perpendicular bisectors
the last two digits of the number make a number that is divisible by 4

5. ?
the perpendicular distance
xy + xz
the percent of decrease
is a subset of

6. The product of x and y
xy
right triangle
v(x2-x1)²+ (y2-y1)²
Axioms

7. Sum of two even numbers is
even
cylinder
right triangle
b is the y-intercept

8. | |
inconsistent lines
n percent greater than x
parallel
probability

9. x>0 and y<0 or x<0 and y >0
b is the y-intercept
xy< 0
null set
x<0 and z=x+y

10. 1-1-v2 (90-45-45)
properties of a square
right triangle
180 degrees
1 - 3 - 5 - 7 - 9

11. y years ago
medians of a triangle
negative
equal
-y

12. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints
inscribed angle
the percent of increase
midpoint of a line segment joining 2 parts
is a subset of

13. The percent increase from x to y (y>x)
(y-x/x)100
triangle
y-x
itself

14. When two parallel lines are crossed by a third straight line (transversal) - then
greater than c
all acute angles are equal and all obtuse angles are equal
belongs to
chord

15. x younger than y
x - y
polygon
implies
a<x<b

16. Volume= 4/3?r² surface area= 4?r²
v3/2 or .87
±vx
sphere
y intercept

17. y<x
1 - 3 - 5 - 7 - 9
a+b+d=c+d
altitude of a triangle
x>y

18. (x+y) (x-y)
x²-y²
right triangle
x is less than y
pythagorean theorem

19. x²
the square of x
the third side
equal angles
inscribed angle

20. (amount of decrease/original amount) x 100
x and y
x>y
x²-y²
the percent of decrease

21. x(y-z)
similar triangles
xy< 0
xy-xz
right triangle

22. xw> yz
the last two digits of the number make a number that is divisible by 4
isosceles triangle
x>y>0 and w>z>0
reflex angle

23. Area= s² perimeter= 4s
inscribed angle
square
x + y
properties of a rectangle

24. Sum of two odd numbers is
supplementary angles
always positive or zero
the percent of increase
even

25. What % of m is n
circle
expression of an even number
a side< b side
(x/100)m= n

26. All even numbers end in the digits of
times
0 - 2 - 4 - 6 - 8
probability
when finding a solution set

27. (sum of individual quantities or measures/ total number of quantities or measures)
cylinder
inverse of a relation
average
a<x<b

28. Product of two odd numbers is
a+b+d=c+d
one solution
odd
obtuse angle

29. 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
the percent of decrease
even
approx square roots
obtuse angle

30. A+b=c+ d=d
xy-xz
(y-x/x)100
a+b+d=c+d
diagonal of a square

31. Product of an even number and any other number is
right triangle
even
xy-xz
reflex angle

32. 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
equal
inscribed angle
180 degrees
w<0 and x>y

33. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
c x (john'S age)
set
a+b+d=c+d
isosceles triangle

34. Wx>wy
x>y and y>z
x²-2xy+y²
domain of a relation
w>0 and x>y

35. Of
w<0 and x>y
times
expression of an odd number
x percent

36. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
1.4
cube
any variable
cylinder

37. 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
opposite the greatest side
+y
-y

38. 1. round the numbers being multiplied to one more place than it is being asked. 2. Multiply the rounded off numbers 3. round of product to desired number of places
approx square roots
180 degrees
vertical angles
approx products

39. If two lines are perpendicular - the slope of one is the
negative reciprocal of the other
parallelogram
diameter of circle
itself

40. x - (n/100)x
a side< b side
±vx
isosceles triangle
n percent less than x

41. Angles that equal 180 degrees
consistent lines
b+d>c+e
even
supplementary angles

42. 2k + 1
x-y
semicircle
expression of an odd number
determining if a number is prime

43. The point where the line crosses the y-axis - x will always = 0 in this case
y intercept
properties of a square
set
x is less than y

44. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other
obtuse angle
circle
properties of a square
vertical angles

45. 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)
combinations
right triangle
positive
simultaneous equations

46. Sin 45°
parallelogram
x<0
right triangle
v2/2 or .71

47. x= -b + vb²-4ac/2a and x = -b - vb²-4ac/2a
x>y
straight angle
quadratic equations
(y-x/x)100

48. 1/2bh
x percent
even
right triangle
area of a triangle

49. Any integer is divisible by 3 - if
expression of an even number
then side b > side a
the sum of its digits is divisible by 3
regular polygon properties

50. x/100
the last digit is 0
the third side
x%
triangle or straight line