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Test your basic knowledge |
GRE Math Strategies
Start Test
Study First
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. Write down every member that the two sets have in common. The intersection of the sets A and B is a set written AnB
1/2
the sum of its digits is divisible by 3
find the intersection of two sets
isosceles triangle
2. 90°
null set
(x/100)m= n
right angle
w<0 and x>y
3. Wx>wy
22/7 or 3.14
w>0 and x>y
it is also divisible by 2 and 3
0 - 2 - 4 - 6 - 8
4. All three sides and all three angles are equal
w>0 and x>y
x-y/xy
x and y
equilateral triangle
5. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
cylinder
v(x2-x1)²+ (y2-y1)²
if the last digit of the number is 0 -2 -4 -6 -8
when finding a solution set
6. The percent decrease from x to y ( y<x)
a set
x>y and y>z
consistent lines
(x-y/x)100
7. Integer is divisible by 2
consistent lines
x is less than y
diagonal of a square
if the last digit of the number is 0 -2 -4 -6 -8
8. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
±vx
0 - 2 - 4 - 6 - 8
central angle
permutations
9. z>y
360 degrees
x<0 and z=x+y
x intercept
range of a relation
10. Which - what
right triangle
any variable
xy + xz
the third side
11. Any integer is divisible by 8 if
properties of a rectangle
180 degrees
the last three numbers are divisible by 8
the sum of parts
12. 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
inscribed angle
x - y
parallel
13. B²-4ac = 0 there is
360 degrees
one solution
v3/2 or .87
no solutions
14. Area= 1/4s² v3 perimeter= 3s altitude= 1/2s v3
equilateral triangle
right angle
parallel
n percent less than x
15. | |
null set
parallel
22/7 or 3.14
y intercept
16. 5-12-13
right triangle
equal to the slope of the other
x%
xy
17. Diagonal= sv2
diagonal of a square
distributive axiom
even
finding the union of sets
18. 1/an
the last three numbers are divisible by 8
diagonal of a square
a?n
equal to the sum of the measures of the remote exterior angles
19. 2k
expression of an even number
chord
simultaneous equations in 2 unknowns
isosceles triangle
20. Angles that equal 180 degrees
radius of a circle
radius
supplementary angles
right triangle
21. 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
negative reciprocal of the other
standard deviation
perpendicular bisectors
approx sums
22. 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
x intercept
pythagorean theorem
1
23. ?
a set
properties of parallelograms
range of a relation
or
24. C²= a²+b² and angle x and y are equal to 90°
inscribed angle
diameter
right triangle
a
25. Between 90° and 180°
x<0
obtuse angle
±vx
diameter
26. Intersect at only one point - the point is the only solution to the pair of equations
standard deviation
consistent lines
tangent
associative axiom of addition and multiplication
27. Area= bh perimeter= 2a +2b
x and y
parallelogram
equals
the last two digits of the number make a number that is divisible by 4
28. 180°
triangle or straight line
+y
simultaneous equations in 2 unknowns
slope of a line joining two points
29. x+w> y+z
polygon
x>y and w>z
w<0 and x>y
negative
30. (amount of decrease/original amount) x 100
-y
odd
equal to the sum of the measures of the remote exterior angles
the percent of decrease
31. Is - as - was - has - cost
triangle
the third side
square
equals
32. C times as old as john
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183
33. One angle is equal 90° and the other two angles are equal to the sum of 90°
perpendicular
angle inscribed in semicircle
equal angles
right triangle
34. x(y+z)
commutative axiom of addition and multiplication
x>y>0 and w>z>0
xy + xz
x is greater than y
35. Any line that connects two points on a circle.
vertical angles
greater than c
chord
altitude of a triangle
36. The whole equals
circle
y-x
the sum of parts
the last digit is 0
37. Angles directly across each other are equal
vertical angles
v2/2 or .71
right angle
odd
38. x>z
straight angle
x>y and y>z
set
the sum of its digits is divisible by 3
39. Between 180° and 360°
average
x is less than y
360 degrees
reflex angle
40. x/100
x%
b is the y-intercept
equilateral triangle
xy
41. Every set is a subset of
the percent of increase
itself
angle inscribed in semicircle
x-y
42. ? if a side is equal to b side then - the opposite corresponding angles are
circle
equal
right angle
vertical angles
43. The sum of any two sides of a triangle is greater than
sphere
properties of a rhombus
the third side
equal angles
44. 1. determine a rough approximation of the square root of the number. 2. divide the number by all the primes that are less than the approx square root. If the number is not divisible by ANY of the these primes - then it is prime. If it IS divisible -
all acute angles are equal and all obtuse angles are equal
commutative axiom of addition and multiplication
the sum of parts
determining if a number is prime
45. ?
and
midpoint of a line segment joining 2 parts
expression of an odd number
distributive axiom
46. 1-1-v2 (90-45-45)
similar triangles
expression of an odd number
diagonal of a square
right triangle
47. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)
associative axiom of addition and multiplication
right triangle
a set
obtuse angle
48. Any integer is divisible by 9 - if
equal to the sum of the measures of the remote exterior angles
n percent less than x
-y
the sum of its digits is divisible by 9
49. A°
1
expression of an even number
approx square roots
parallel
50. 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 two pairs of congruent triangles
properties of parallelograms
determining if a number is prime
any variable
angle bisector