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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. A subset of a set is
a set
diagonal of a square
x + y
xy>0

2. Which - what
is a subset of
coinciding lines
any variable
vertical angles

3. ?
parallel
n= mx/100
perpendicular
trapezoid

4. The quotient of any quantity (except 0) divided by zero is infinity
odd
even
never divide by zero
isosceles triangle

5. Sin 45°
opposite the greatest side
v2/2 or .71
relation
xy + xz

6. Sin 30°
1/2
implies
two solutions
b is the y-intercept

7. Angles that equal 180 degrees
approx sums
it is also divisible by 2 and 3
v(x2-x1)²+ (y2-y1)²
supplementary angles

8. ?
rectangle
22/7 or 3.14
two solutions
the third side

9. 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}
straight angle
when finding a solution set
vertical angles
approx square roots

10. Sin 60°
v3/2 or .87
quadratic equations
null set
is a subset of

11. The product of an even number of negative numbers is
positive
vertical angles
equal to the sum of the measures of the remote exterior angles
equal

12. The whole equals
altitude of a triangle
triangle or straight line
it is also divisible by 2 and 3
the sum of parts

13. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
times
if two sets have no elements in common
set
a set

14. Any integer is divisible by 9 - if
pythagorean theorem
the sum of its digits is divisible by 9
x>y and y>z
then side b > side a

15. If an equation can be put into the form y= mx +b - then
b is the y-intercept
finding the union of sets
a
set

16. C²= a²+b² and angle x and y are equal to 90°
never divide by zero
the last two digits of the number make a number that is divisible by 4
0 - 2 - 4 - 6 - 8
right triangle

17. 1/an
diameter of circle
a?n
square
-y

18. y years from now
right triangle
right triangle
the last digit is either 0 or 5
+y

19. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²
similar triangles
a
any variable
right triangle

20. x less than y
y angle< x angle
even
set
y-x

21. (sum of individual quantities or measures/ total number of quantities or measures)
average
the sum of parts
quadratic equations
the percent of decrease

22. The distance between two parallel lines or from a point to a line always means
the perpendicular distance
percent
x + y
or

23. What % of m is n
Axioms
0 - 2 - 4 - 6 - 8
a relation is a function
(x/100)m= n

24. (amount of increase/original amount) x 100
diameter of circle
equal
the percent of increase
xy + xz

25. B>c+ d>e
b+d>c+e
average
trapezoid
0 - 2 - 4 - 6 - 8

26. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f
the last digit is 0
right triangle
the last digit is either 0 or 5
similar triangles

27. xn<0 if n is odd and xn>0 if n is even
x<0
semicircle
the perpendicular distance
never divide by zero

28. Sum of two odd numbers is
even
medians of a triangle
diagonal of a square
x + y

29. Volume= e(edge)³ surface area= 6e²
cube
properties of a rectangle
sphere
central angle

30. A+b=c+ d=d
tangent
x is greater than y
a+b+d=c+d
the sum of parts

31. 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
central angle
approx products
range of a relation
odd

32. Volume=lwh surface area= 2wh + 2hl + 2lw
null set
rectangular solid
x - y
belongs to

33. The percent increase from x to y (y>x)
equal angles
(y-x/x)100
equilateral triangle
one solution

34. Area= s² perimeter= 4s
x - y
square
negative reciprocal of the other
pythagorean theorem

35. Ax= by + C
simultaneous equations in 2 unknowns
1 - 3 - 5 - 7 - 9
x²-y²
a relation is a function

36. Angles directly across each other are equal
vertical angles
properties of a rhombus
x-y
180 degrees

37. In a triangle - if ?c(interior angle in triangle) and ?d(exterior angle out of triangle) are supplmentary angles - than ?a and ?b are remote interior angles to <d - thus - a +b+c = 180 (triangle) c+d = 180 (supplementary angles)
angle a and angle b = angle d
associative axiom of addition and multiplication
±vx
isosceles triangle

38. 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
determining if a number is prime
standard deviation
the sum of its digits is divisible by 3
distributive axiom

39. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
permutations
v2/2 or .71
the sum of parts
rectangular solid

40. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
simultaneous equations
negative reciprocal of the other
no solutions
semicircle

41. Set of solutions to an equation
x²-2xy+y²
midpoint of a line segment joining 2 parts
solution set
xy< 0

42. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
a?n
simultaneous equations
x<0
180 degrees

43. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other
relation
semicircle
w<0 and x>y
vertical angles

44. Integer is divisible by 2
regular polygon properties
radius
if the last digit of the number is 0 -2 -4 -6 -8
xy>0

45. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
360 degrees
a relation is a function
cylinder
the last three numbers are divisible by 8

46. (x+y)(x+y)= (x+y)²
(x-y/x)100
hexagon
properties of a rhombus
x²+ 2xy+y²

47. ?
xy>0
x percent
isosceles triangle
or

48. V2
right triangle
y intercept
0 - 2 - 4 - 6 - 8
1.4

49. x - (n/100)x
n percent less than x
angle
x²-y²
parallel

50. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
hemisphere
itself
xy>0
(x-y/x)100