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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 pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
x>y>0 and w>z>0
(y-x/x)100
simultaneous equations
b is the y-intercept

2. x +z > y+z
x>y
Axioms
diagonal of a square
similar triangles

3. If the base angles of a triangle are equal - the triangle is
isosceles
-y
vertical angles
the perpendicular distance

4. Distributive axiom - commutative axiom of addition and multiplication - associative axioms of addition and multiplication
Axioms
similar triangles
negative reciprocal of the other
the last two digits of the number make a number that is divisible by 4

5. (amount of decrease/original amount) x 100
simultaneous equations
triangle or straight line
the percent of decrease
commutative axiom of addition and multiplication

6. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
one solution
x and y
pythagorean theorem
x intercept

7. (x+y)(x+y)= (x+y)²
if the last digit of the number is 0 -2 -4 -6 -8
right triangle
1
x²+ 2xy+y²

8. One angle is equal 90° and the other two angles are equal to the sum of 90°
the perpendicular distance
determining if a number is prime
all acute angles are equal and all obtuse angles are equal
right triangle

9. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)
pythagorean theorem
associative axiom of addition and multiplication
closed set
itself

10. 1/an
range of a relation
a?n
x²+ 2xy+y²
x²-y²

11. Two tangents to a circle from the same point outside of the circle are always
central angle
equal
+y
the last two digits of the number make a number that is divisible by 4

12. The sum of the interior angles is
180 degrees
a<x<b
x and y
360 degrees

13. 9-40-41
diagonal of a square
right triangle
x%
n= mx/100

14. ?
perpendicular
360 degrees
right triangle
right triangle

15. In a triangle - the greatest angles lies
c x (john'S age)
relation
a side< b side
opposite the greatest side

16. Sin 45°
the square of x
approx square roots
v2/2 or .71
a

17. x(y-z)
xy-xz
diameter of circle
diagonal of a square
3.16

18. 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
-y
equal
circle

19. Is always a right angle.
the square of x
belongs to
x+y/xy
angle inscribed in semicircle

20. The point where the line crosses the y-axis - x will always = 0 in this case
y intercept
isosceles
expression of an odd number
v(x2-x1)²+ (y2-y1)²

21. In transversals
area of a triangle
all acute angles are equal and all obtuse angles are equal
equilateral triangle
hexagon

22. 180°
triangle or straight line
then side b > side a
±vx
commutative axiom of addition and multiplication

23. x older than y
x + y
x<0
x<0 and z=x+y
supplementary angles

24. A/A¹ = B/B¹= C/C¹
similar triangles
n percent less than x
right triangle
the percent of decrease

25. x>z
x>y and y>z
x-y
when finding a solution set
the perpendicular distance

26. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
always positive or zero
x and y
180 degrees
cylinder

27. Area= bh perimeter= 2a +2b
n= mx/100
parallelogram
equilateral triangle
a+b+d=c+d

28. Volume= e(edge)³ surface area= 6e²
radius of a circle
x%
sphere
cube

29. 1/y-1/x x -y ? 0
perpendicular
the last digit is either 0 or 5
x-y/xy
approx square roots

30. y years from now
+y
two solutions
diagonal of a square
the third side

31. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²
x + y
right triangle
n percent less than x
x²-2xy+y²

32. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
standard deviation
is a subset of
set
x%

33. (amount of increase/original amount) x 100
the percent of increase
even
b is the y-intercept
Axioms

34. M= y2-y1/x2-x1
right triangle
slope of a line joining two points
rectangle
inscribed angle

35. 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 products
the perpendicular distance
equal to the sum of the measures of the remote exterior angles
y-x

36. Angles directly across each other are equal
x²-y²
1.4
finding the union of sets
vertical angles

37. z>y
set
x<0 and z=x+y
approx products
isosceles triangle

38. Any integer is divisible by 8 if
positive
the last three numbers are divisible by 8
commutative axiom of addition and multiplication
y intercept

39. 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}
circle
odd
when finding a solution set
3.16

40. V3
tangent
x<0 and z=x+y
similar triangles
1.7

41. ? if a side < b side - then
x-y/xy
obtuse angle
belongs to
y angle< x angle

42. Volume= 4/3?r² surface area= 4?r²
approx products
sphere
average
inscribed angle

43. 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
expression of an odd number
x<0 and z=x+y
approx square roots
isosceles triangle

44. Which - what
v2/2 or .71
1.7
any variable
x>y and w>z

45. The quotient of any quantity (except 0) divided by zero is infinity
perpendicular bisectors
x-y/xy
similar triangles
never divide by zero

46. xn<0 if n is odd and xn>0 if n is even
w<0 and x>y
x<0
n percent greater than x
diagonal of a square

47. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f
vertical angles
a?n
similar triangles
quadratic equations

48. If an equation can be put into the form y= mx +b - then
similar triangles
w<0 and x>y
a relation is a function
b is the y-intercept

49. Any integer is divisible by 5 if
the last digit is either 0 or 5
x-y/xy
the percent of decrease
the sum of its digits is divisible by 9

50. (sum of individual quantities or measures/ total number of quantities or measures)
w<0 and x>y
average
and
similar triangles