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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. (x+y)(x+y)= (x+y)²
x²+ 2xy+y²
xy>0
isosceles triangle
always positive or zero

2. 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
polygon
x-y/xy
c x (john'S age)
inscribed angle

3. Any integer is divisible by 9 - if
the sum of its digits is divisible by 9
similar triangles
percent
3.16

4. If two lines are parallel - the slope of one is
equilateral triangle
y-x
x-y
equal to the slope of the other

5. Area= bh perimeter= 2a +2b
parallelogram
the sum of its digits is divisible by 3
rectangular solid
triangle or straight line

6. x>0 and y>0 or x<0 and y<0
Axioms
or
pythagorean theorem
xy>0

7. ?
angle
n percent less than x
when finding a solution set
±vx

8. The product of x and y
x + y
right triangle
xy
1.4

9. x + (n/100)x
associative axiom of addition and multiplication
x<0 and z=x+y
if the last digit of the number is 0 -2 -4 -6 -8
n percent greater than x

10. When two parallel lines are crossed by a third straight line (transversal) - then
all acute angles are equal and all obtuse angles are equal
radius of a circle
x>y
and

11. Product of two odd numbers is
1
odd
perpendicular
acute angle

12. R²
n percent greater than x
one solution
diameter of circle
obtuse angle

13. 1. round each number being added to one more place than it is being asked. 2. add the rounded numbers. 3. round off the sum to the desired number of places
approx sums
approx square roots
x-y/xy
straight angle

14. /100 (the ______ number over 100)
percent
rectangular solid
right triangle
distributive axiom

15. A line that is perpendicular to a radius and that passes through only one point of the circle.
tangent
equal to the sum of the measures of the remote exterior angles
even
similar triangles

16. One angle is equal 90° and the other two angles are equal to the sum of 90°
standard deviation
right triangle
combinations
0 - 2 - 4 - 6 - 8

17. x/100
a+b+d=c+d
x%
area of a triangle
xy + xz

18. 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
right triangle
standard deviation
null set
a+b+d=c+d

19. Angles directly across each other are equal
vertical angles
x is less than y
x + y
x<0 and z=x+y

20. x more than y
simultaneous equations
x + y
x-y/xy
expression of an even number

21. 1/y-1/x x -y ? 0
right triangle
determining if a number is prime
x-y/xy
vertical angles

22. A<x and x<b
inconsistent lines
a<x<b
w<0 and x>y
combinations

23. The sume of x and y
consistent lines
b+d>c+e
properties of parallelograms
x + y

24. Area= l x w perimeter = (2l)(2w)
probability
the last digit is 0
right triangle
rectangle

25. 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
w>0 and x>y
the last three numbers are divisible by 8

26. Wx<wy
w<0 and x>y
approx square roots
positive
radius

27. Parallel and never intersect - they have no solution at all - they are parallel with the same slope
v2/2 or .71
the perpendicular distance
inconsistent lines
similar triangles

28. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
set
circle
right triangle
no solutions

29. Ax= by + C
isosceles triangle
consistent lines
simultaneous equations in 2 unknowns
+y

30. ? if a side is equal to b side then - the opposite corresponding angles are
average
equal
x - y
approx products

31. Less than 90°
positive
acute angle
1.4
180 degrees

32. Area = ?r² circumference(perimeter)= 2?r
never divide by zero
circle
expression of an odd number
any variable

33. x older than y
Axioms
altitude of a triangle
x + y
x²+ 2xy+y²

34. x(y+z)
xy + xz
x intercept
positive
xy>0

35. x²
the square of x
the percent of decrease
consistent lines
approx sums

36. A subset of a set is
the perpendicular distance
±vx
any variable
a set

37. Is the relation with ALL ordered pairs REVERSED.
inverse of a relation
radius of a circle
xy + xz
associative axiom of addition and multiplication

38. 1-1-1 (60-60-60)
equilateral triangle
y angle< x angle
1.7
the sum of parts

39. 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.
equal to the sum of the measures of the remote exterior angles
perpendicular bisectors
trapezoid
right triangle

40. A+b=c+ d=d
supplementary angles
a+b+d=c+d
parallel
distributive axiom

41. Sin 30°
regular polygon properties
1/2
even
approx products

42. (amount of increase/original amount) x 100
properties of a rectangle
angle inscribed in semicircle
the percent of increase
distributive axiom

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
associative axiom of addition and multiplication
hemisphere
approx square roots
±vx

44. Have two equal sides and two equal angles formed by the equal sides and the unequal side.
combinations
isosceles triangle
x>y
right triangle

45. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f
similar triangles
y-x
when finding a solution set
the last two digits of the number make a number that is divisible by 4

46. A¹
negative
a
the last two digits of the number make a number that is divisible by 4
x percent

47. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
right triangle
hemisphere
properties of a rhombus
x>y and y>z

48. Any integer is divisible by 8 if
obtuse angle
x-y/xy
expression of an even number
the last three numbers are divisible by 8

49. If the base angles of a triangle are equal - the triangle is
isosceles
consistent lines
trapezoid
the square of x

50. ?
180 degrees
or
chord
finding the union of sets