SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
GRE Math: Quantitative Formulas
Start Test
Study First
Subjects
:
gre
,
math
Instructions:
Answer 45 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. Side lengths of a 30-60-90 right triangle
1-sqrroot of 3-2
2(pi(r^2))+ 2pirh
M= (Y1-Y2)/(X1-X2)
A= (1/2)b*h
2. How to recognize a # as a multiple of 9
M= (Y1-Y2)/(X1-X2)
C=2pir OR d*pi
1-sqrroot of 3-2
The sum of the digits is a multiple of 9.
3. Convert 60% to a fraction
X= -b (+/-) Sqrroot [(b^2) -4ac)]/2a
3/5
Pi(r^2)h
Add them. i.e. (5^7) * (5^3) = 5^10
4. How to recognize if a # is a multiple of 12
1-sqrroot of 3-2
Sum of digits is a multiple of 3 and the last digit is even.
The sum of the digits it a multiple of 3 and the last two digits is a multiple of 4. (i.e 144: 1+4+4=9 which is a multiple of 3 - and 44 is a multiple of 4 - so 144 is a multiple of 12.)
C=2pir OR d*pi
5. Arc length
2/5
X = Measure of interior angle/Circumference of circle 360
1-1-sqrroot of 2
1/8
6. Convert 20% to a fraction
V=Lwh
1/5
A= (1/2)h*(a+b) where a is the length of the bottom base and b is the length of the top base.
SA= 2( Lw + Lh + w*h)
7. How to find the sum of consecutive #s
SA= 4pi(r^3)
Sum= (Average of Consecutive #s) * (# of terms in set)
2(pi(r^2))+ 2pirh
2 - 3 - 5 - 7 - 11 - 13 - 17 - 19 - 23 - 29
8. Surface area of a right circular cylinder
3/5
2(pi(r^2))+ 2pirh
X = Measure of interior angle/Area of Circle 360
The sum of the digits it a multiple of 3 and the last two digits is a multiple of 4. (i.e 144: 1+4+4=9 which is a multiple of 3 - and 44 is a multiple of 4 - so 144 is a multiple of 12.)
9. Convert 16.66% to a fraction
1/8
2(pi(r^2))+ 2pirh
1/6
V=(4/3)pi(r^3)
10. When multiplying exponential #s with the same base - you do this to the exponents...
Pi(r^2)h
1 - 4 - 9 - 16 - 25 - 36 - 49 - 64 - 81 - 100 - 121 - 144 - 169 - 196 - 225
The sum of the digits is a multiple of 3
Add them. i.e. (5^7) * (5^3) = 5^10
11. Convert 83.33% to a fraction
5/6
Take the average of the largest and smallest # in the set. (i.e. for the set of consecutive #s 5....172 would be (172+5)/(2)= 88.5)
The sum of the digits is a multiple of 9.
Distance formula. Distance= Sqrareroot[((Xa-Xb)^2) + ((Ya-Yb)^2)]
12. First 10 prime #s
V=Lwh
2 - 3 - 5 - 7 - 11 - 13 - 17 - 19 - 23 - 29
A=b*h
2(pi(r^2))+ 2pirh
13. Area of a triangle
2/5
A= (1/2)b*h
Add them. i.e. (5^7) * (5^3) = 5^10
1/5
14. Area of a trapezoid
Pythagorean Theorem: h^2= (S1)^2 + (S2)^2
2 - 3 - 5 - 7 - 11 - 13 - 17 - 19 - 23 - 29
The sum of the digits is a multiple of 9.
A= (1/2)h*(a+b) where a is the length of the bottom base and b is the length of the top base.
15. Perfect Squares 1-15
V=Lwh
1 - 4 - 9 - 16 - 25 - 36 - 49 - 64 - 81 - 100 - 121 - 144 - 169 - 196 - 225
The sum of the digits is a multiple of 9.
Distance formula. Distance= Sqrareroot[((Xa-Xb)^2) + ((Ya-Yb)^2)]
16. Perimeter of a rectangle
A=b*h
SA= 2( Lw + Lh + w*h)
P= 2L + 2w
X = Measure of interior angle/Area of Circle 360
17. Convert 40% to a fraction
Divide or multiply both sides by a NEGATIVE number
X = Measure of interior angle/Area of Circle 360
2/5
V=(4/3)pi(r^3)
18. Convert 80% to a fraction
V=(4/3)pi(r^3)
3/4
M= (Y1-Y2)/(X1-X2)
4/5
19. How to recognize a # as a multiple of 4
The last 2 digits are a multiple of 4. (i.e 144. 44 is a multiple of 4 - so 144 must also be a multiple of 4.)
Pi(r^2)h
A= (1/2)b*h
SA= 2( Lw + Lh + w*h)
20. Volume of a rectangular box
V=Lwh
M= (Y1-Y2)/(X1-X2)
1/4
SA= 4pi(r^3)
21. Side lengths of a 45-45-90 right triangle
1-sqrroot of 3-2
1 - 4 - 9 - 16 - 25 - 36 - 49 - 64 - 81 - 100 - 121 - 144 - 169 - 196 - 225
1/6
1-1-sqrroot of 2
22. Surface area of a sphere
V=(4/3)pi(r^3)
SA= 4pi(r^3)
A=l*w
2/3
23. Circumference of a Circle
2/5
1/8
C=2pir OR d*pi
A=b*h
24. When solving an inequality - flip the sign when you....
Divide or multiply both sides by a NEGATIVE number
Sum of digits is a multiple of 3 and the last digit is even.
X = Measure of interior angle/Area of Circle 360
The sum of the digits is a multiple of 9.
25. Convert 12.5% to a fraction
1/8
1/4
4/5
2/5
26. Area of parallelogram
Pythagorean Theorem: h^2= (S1)^2 + (S2)^2
P= 2L + 2w
A=b*h
The sum of the digits it a multiple of 3 and the last two digits is a multiple of 4. (i.e 144: 1+4+4=9 which is a multiple of 3 - and 44 is a multiple of 4 - so 144 is a multiple of 12.)
27. How to recognize a multiple of 6
3/4
P= 2L + 2w
1-sqrroot of 3-2
Sum of digits is a multiple of 3 and the last digit is even.
28. When asked to find the distance between 2 points on a graph use this formula...
C=2pir OR d*pi
Distance formula. Distance= Sqrareroot[((Xa-Xb)^2) + ((Ya-Yb)^2)]
SA= 4pi(r^3)
A=l*w
29. Convert 75% to a fraction
3/4
V=(4/3)pi(r^3)
2 - 3 - 5 - 7 - 11 - 13 - 17 - 19 - 23 - 29
A=b*h
30. Surface area of a rectangular solid
SA= 2( Lw + Lh + w*h)
Divide or multiply both sides by a NEGATIVE number
1/6
Take the average of the largest and smallest # in the set. (i.e. for the set of consecutive #s 5....172 would be (172+5)/(2)= 88.5)
31. Volume of a right circular cylinder
Pi(r^2)h
V=Lwh
A=l*w
The last 2 digits are a multiple of 4. (i.e 144. 44 is a multiple of 4 - so 144 must also be a multiple of 4.)
32. Volume of a sphere
5/6
2/5
SA= 4pi(r^3)
V=(4/3)pi(r^3)
33. Slope given 2 points
Subtract them. i.e (5^7)/(5^3)= 5^4
Pi(r^2)h
P= 2L + 2w
M= (Y1-Y2)/(X1-X2)
34. Find hypotenuse of a right triangle given 2 side lengths
Pythagorean Theorem: h^2= (S1)^2 + (S2)^2
V=Lwh
1 - 4 - 9 - 16 - 25 - 36 - 49 - 64 - 81 - 100 - 121 - 144 - 169 - 196 - 225
SA= 4pi(r^3)
35. Area of a rectangle
SA= 4pi(r^3)
Distance formula. Distance= Sqrareroot[((Xa-Xb)^2) + ((Ya-Yb)^2)]
Add them. i.e. (5^7) * (5^3) = 5^10
A=l*w
36. How to recognize a # as a multiple of 3
Sum= (Average of Consecutive #s) * (# of terms in set)
The sum of the digits is a multiple of 3
C=2pir OR d*pi
The last 2 digits are a multiple of 4. (i.e 144. 44 is a multiple of 4 - so 144 must also be a multiple of 4.)
37. Convert 25% to a fraction
M= (Y1-Y2)/(X1-X2)
1/5
1/4
The sum of the digits it a multiple of 3 and the last two digits is a multiple of 4. (i.e 144: 1+4+4=9 which is a multiple of 3 - and 44 is a multiple of 4 - so 144 is a multiple of 12.)
38. Area of a circle
A=pi*(r^2)
Sum of digits is a multiple of 3 and the last digit is even.
Add them. i.e. (5^7) * (5^3) = 5^10
3/5
39. Quadratic Formula
2 - 3 - 5 - 7 - 11 - 13 - 17 - 19 - 23 - 29
D=rt so r= d/t and t=d/r
X= -b (+/-) Sqrroot [(b^2) -4ac)]/2a
P= 2L + 2w
40. Find distance when given time and rate
The last 2 digits are a multiple of 4. (i.e 144. 44 is a multiple of 4 - so 144 must also be a multiple of 4.)
1/3
D=rt so r= d/t and t=d/r
Divide or multiply both sides by a NEGATIVE number
41. Area of a sector
2 - 3 - 5 - 7 - 11 - 13 - 17 - 19 - 23 - 29
M= (Y1-Y2)/(X1-X2)
X = Measure of interior angle/Area of Circle 360
Subtract them. i.e (5^7)/(5^3)= 5^4
42. How to find the average of consecutive #s
V=(4/3)pi(r^3)
Sum of digits is a multiple of 3 and the last digit is even.
3/4
Take the average of the largest and smallest # in the set. (i.e. for the set of consecutive #s 5....172 would be (172+5)/(2)= 88.5)
43. Convert 66.66% to a fraction
P= 2L + 2w
Add them. i.e. (5^7) * (5^3) = 5^10
2/3
1/8
44. Convert 33.33% to a fraction
The last 2 digits are a multiple of 4. (i.e 144. 44 is a multiple of 4 - so 144 must also be a multiple of 4.)
1/3
2/5
A=b*h
45. When dividing exponential #s with the same base - you do this to the exponents...
Pi(r^2)h
A= (1/2)b*h
D=rt so r= d/t and t=d/r
Subtract them. i.e (5^7)/(5^3)= 5^4