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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. Sum of two odd numbers is
a+b+d=c+d
even
w<0 and x>y
regular polygon properties
2. 180°
inscribed angle
never divide by zero
even
straight angle
3. x - (n/100)x
a relation is a function
coinciding lines
n percent less than x
x percent
4. If the each element of the domain occurs only once as a FIRST component
opposite the greatest side
finding the union of sets
negative reciprocal of the other
a relation is a function
5. 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.
right triangle
equal
polygon
v2/2 or .71
6. | |
xy + xz
obtuse angle
parallel
n percent less than x
7. 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 -
probability
determining if a number is prime
the last digit is 0
even
8. (x-y)(x-y) = (x-y)²
and
even
xy-xz
x²-2xy+y²
9. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases
equilateral triangle
isosceles
negative
cylinder
10. x < y or y> x
x - y
the percent of increase
range of a relation
x is less than y
11. The angles opposite to sides that are equal in length have
y angle< x angle
medians of a triangle
x intercept
equal angles
12. Less than 90°
no solutions
acute angle
properties of a square
null set
13. B>c+ d>e
x²-2xy+y²
circle
x + y
b+d>c+e
14. ? if a side < b side - then
xy< 0
y angle< x angle
a+b+d=c+d
x + y
15. 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
null set
approx sums
never divide by zero
solution set
16. The product of an even number of negative numbers is
y-x
x + y
implies
positive
17. Any integer is divisible by 6 if
right triangle
probability
greater than c
it is also divisible by 2 and 3
18. When two parallel lines are crossed by a third straight line (transversal) - then
all acute angles are equal and all obtuse angles are equal
equal
b is the y-intercept
x percent
19. The decrease from x to y
belongs to
approx square roots
x-y
xy
20. The sum of the interior angles is
closed set
180 degrees
equal angles
consistent lines
21. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
x<0 and z=x+y
set
the third side
straight angle
22. 1-v3- 2 (90-30-60)
x + y
equal
right triangle
a set
23. Which - what
x and y
any variable
two solutions
1/2
24. 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
v3/2 or .87
x - y
right triangle
finding the union of sets
25. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)
right triangle
associative axiom of addition and multiplication
the last digit is 0
perpendicular
26. The product of x and y
set
xy
b is the y-intercept
distributive axiom
27. 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
acute angle
all acute angles are equal and all obtuse angles are equal
trapezoid
28. 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
inverse of a relation
inscribed angle
a<x<b
x%
29. The difference between x and y
x - y
triangle
even
perpendicular bisectors
30. xn<0 if n is odd and xn>0 if n is even
never divide by zero
x<0
properties of a rectangle
standard deviation
31. 360°
approx square roots
circle
cube
pythagorean theorem
32. 180°
w>0 and x>y
circle
approx sums
triangle or straight line
33. 2k
rectangular solid
expression of an even number
x is greater than y
the last three numbers are divisible by 8
34. Is the set of the second components of the ordered pairs
range of a relation
any variable
right triangle
expression of an odd number
35. Have two equal sides and two equal angles formed by the equal sides and the unequal side.
equal to the slope of the other
equilateral triangle
isosceles triangle
x²-y²
36. One angle is equal 90° and the other two angles are equal to the sum of 90°
even
x²-2xy+y²
right triangle
3.16
37. 1-1-1 (60-60-60)
circle
equilateral triangle
0 - 2 - 4 - 6 - 8
x + y
38. x older than y
a relation is a function
x + y
v2/2 or .71
the percent of increase
39. ?
perpendicular
right angle
1/2
quadratic equations
40. Area= 1/2bh perimeter= a+b+c
vertical angles
w<0 and x>y
triangle
360 degrees
41. 8-15-17
equal
right triangle
set
equilateral triangle
42. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)
x + y
semicircle
all acute angles are equal and all obtuse angles are equal
x²-y²
43. 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
equal
equal
coinciding lines
expression of an odd number
44. Ax= by + C
rectangular solid
simultaneous equations in 2 unknowns
cube
xy
45. (amount of increase/original amount) x 100
coinciding lines
the percent of increase
slope of a line joining two points
n percent less than x
46. xw> yz
n percent greater than x
average
times
x>y>0 and w>z>0
47. 1/x + 1/y x -y ? 0
x+y/xy
x%
square
all acute angles are equal and all obtuse angles are equal
48. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²
x is greater than y
midpoint of a line segment joining 2 parts
pythagorean theorem
y-x
49. 2k + 1
equal angles
expression of an odd number
similar triangles
combinations
50. Sin 30°
w>0 and x>y
equal to the sum of the measures of the remote exterior angles
right triangle
1/2