Test your basic knowledge |

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. 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
approx square roots
range of a relation
a
similar triangles

2. xw> yz
a
solution set
x>y and y>z
x>y>0 and w>z>0

3. x - (n/100)x
altitude of a triangle
the third side
belongs to
n percent less than x

4. If y²= x - then y =
the last digit is 0
1/2
±vx
right angle

5. x + (n/100)x
±vx
cube
n percent greater than x
the last three numbers are divisible by 8

6. (amount of decrease/original amount) x 100
n= mx/100
the percent of decrease
negative
y angle< x angle

7. x>0 and y<0 or x<0 and y >0
all acute angles are equal and all obtuse angles are equal
xy< 0
odd
v2/2 or .71

8. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
right angle
vertical angles
set
trapezoid

9. The whole equals
two solutions
the sum of parts
chord
relation

10. x < y or y> x
x is less than y
equilateral triangle
x>y>0 and w>z>0
perpendicular

11. Any integer is divisible by 9 - if
the sum of its digits is divisible by 9
positive
chord
angle a and angle b = angle d

12. ?
it is also divisible by 2 and 3
perpendicular
circle
x percent

13. The point where the line crosses the y-axis - x will always = 0 in this case
x²+ 2xy+y²
y intercept
right triangle
equilateral triangle

14. A<x and x<b
x is less than y
a<x<b
right triangle
opposite the greatest side

15. The case where the two equations are equivalent (just two different forms of the same mathematical relation). Any point that satisfies either of the equations - automatically satisfies both
coinciding lines
the percent of decrease
hemisphere
x+y/xy

16. ? if a side < b side - then
right triangle
pythagorean theorem
equal
y angle< x angle

17. The distance between two parallel lines or from a point to a line always means
the perpendicular distance
angle a and angle b = angle d
negative
x intercept

18. y years from now
x>y and w>z
angle bisector
+y
when finding a solution set

19. When the elements of a set are ordered pairs
w<0 and x>y
(y-x/x)100
relation
medians of a triangle

20. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f
similar triangles
x + y
a set
never divide by zero

21. x +z > y+z
1.7
all acute angles are equal and all obtuse angles are equal
x>y
a<x<b

22. 1-v3- 2 (90-30-60)
and
c x (john'S age)
if the last digit of the number is 0 -2 -4 -6 -8
right triangle

23. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²
then side b > side a
expression of an even number
x²-y²
right triangle

24. 1-1-1 (60-60-60)
equilateral triangle
angle bisector
x>y
the third side

25. Volume= e(edge)³ surface area= 6e²
cube
xy + xz
trapezoid
right triangle

26. y<x
x is less than y
x>y
diagonal of a square
parallelogram

27. (x+y) (x-y)
properties of a square
y-x
any variable
x²-y²

28. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
the third side
semicircle
x²-2xy+y²
midpoint of a line segment joining 2 parts

29. A line that is perpendicular to a radius and that passes through only one point of the circle.
tangent
x + y
xy
equal

30. All angles are right angles and diagonals are equal 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
inverse of a relation
is a subset of
properties of a rectangle
the perpendicular distance

31. Two tangents to a circle from the same point outside of the circle are always
find the intersection of two sets
circle
equals
equal

32. Product of two odd numbers is
altitude of a triangle
odd
±vx
rectangle

33. x > y or y< x
negative reciprocal of the other
x is greater than y
n percent less than x
x>y>0 and w>z>0

34. Have two equal sides and two equal angles formed by the equal sides and the unequal side.
circle
equal to the slope of the other
isosceles triangle
x + y

35. ? if a side is equal to b side then - the opposite corresponding angles are
quadratic equations
equal
y-x
right triangle

36. 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
simultaneous equations in 2 unknowns
right triangle
implies
approx sums

37. A closed plane whose sides are straight lines. The sum of the angles is equal to 180(n-2) - where n is the number of sides.
equal
(x-y/x)100
polygon
x+y/xy

38. The percent increase from x to y (y>x)
the last three numbers are divisible by 8
slope of a line joining two points
isosceles
(y-x/x)100

39. Is drawn from the vertices perpendicular to the opposite sides. The lengths of these lines are useful in calculating the area of the trinagle since the area of the triangle is 1/2bh and the height and the _____are the same.
diagonal of a square
altitude of a triangle
perpendicular
x-y

40. x less than y
isosceles
a?n
y-x
y angle< x angle

41. 180°
approx square roots
x + y
180 degrees
straight angle

42. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
x²-y²
determining if a number is prime
1
hemisphere

43. 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}
equal to the slope of the other
when finding a solution set
y-x
x - y

44. Any integer is divisible by 6 if
approx sums
it is also divisible by 2 and 3
expression of an even number
diameter of circle

45. What % of m is n
approx products
it is also divisible by 2 and 3
(x/100)m= n
is a subset of

46. Sum of two odd numbers is
even
never divide by zero
inverse of a relation
-y

47. In a triangle - the greatest angles lies
trapezoid
x-y
x + y
opposite the greatest side

48. 1/2d
semicircle
x%
radius of a circle
all acute angles are equal and all obtuse angles are equal

49. The difference between x and y
equilateral triangle
vertical angles
the percent of increase
x - y

50. x²
set
reflex angle
the square of x
vertical angles