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GMAT Math Memorization

Subjects : gmat, 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. What is the difference between a permutation or a combination?

2. =6*15
512
90
220
50

3. Key to percent increase/decrease
7
10 -000 -000 -000
Amount of increase/original amount = x/100 (Then cross multiply to find x)
8

4. SQRT 49
247
7
112
32

5. =5^2
25
If it is divisible by both 2 and 3 (318 is because it is even and the sum of 3+1+8 is divisible by 3)
54
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

6. =16*18
6
260
288
9

7. SQRT 25
42
5
112
380

8. =6*8
36
The direction of the inequality symbol changes
48
Rate * Time = Distance (Hint: Draw a chart)

9. =6*10
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
144
224
60

10. =3*13
39
Pr^2
182
120

11. =4^6
60
40
209
4 -096

12. =5*12
60
216
42
343

13. =2^5
7
32
Side - Side - Side^2
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

14. Odds that at least one thing will happen?

15. =14*16
5
x:x^(1/3):2x
272
224

16. =8*11
88
105
32
Multiply the # of choices for each of the spots

17. SQRT 9
42
8
3
Amount of increase/original amount = x/100 (Then cross multiply to find x)

18. =5*18
2
51
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
90

19. =8^1
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
2pr
280
8

20. =4*17
68
360
10 -000 -000 -000
80

21. =8*14
112
132
285
280

22. how do you find the range of a set of numbers?
210
44
Subtract the smallest number from the greatest number
1 -000

23. When is a number divisible by 4?

24. =3*12
125
361
228
36

25. 8^(1/3)
119
48
2
240

26. Equation for a line?
y=mx+b where b is the y-intercept (the point which crosses the y-axis) m is the slope of the line - and x & y are the coordinates of some point on that line
90
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
81

27. =3^1
1.414213562
8
45
3

28. =7*9
54
260
361
63

29. =13*20
33
30
260
Add or subtract the numbers on top and keep the same denominator

30. Order of operations
75
125
Pr^2
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

31. When is a number divisible by 6?
If it is divisible by both 2 and 3 (318 is because it is even and the sum of 3+1+8 is divisible by 3)
27
Will = 1 - Won't
2pr

32. =3^4
45
81
8
162

33. =3*20
A+B (Add both probabilities)
108
4
60

34. 125^(1/3)
25
5
60
105

35. =7*16
Itself
Multiply the numerators and put the product over the product of the denominators
112
72

36. =7*18
2 -401
126
128
18

37. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
36
100 -000
27

38. =3*11
240
44
132
33

39. Area of a triangle?
15
78
153
(b*h)/2

40. =12*20
240
88
45
30

41. =10^4
Multiply the # of choices for each of the spots
5
4 -096
10 -000

42. SQRT 100
100 -000 -000
270
171
10

43. =10^3
9
45
1 -000
128

44. How do you find the median of a set of numbers?
243
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
44
8

45. =11*11
10 -000 -000 -000
30
234
121

46. =15*16
240
125
100 -000 -000
102

47. Circumference of a circle?
98
2pr
36
104

48. SQRT 4 -096
102
2
152
64

49. 0/1 =
252
100
36
0 (any fraction with 0 on top is 0)

50. =6*16
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
96
50
52