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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. Any number to the 0 power is?
72
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
One (1)
729

2. =19*20
380
7 -776
27
8

3. =4^1
64
60
6
4

4. Order of operations
10 -000
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)
306
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

5. SQRT 100 -000 -000
84
6 -561
10 -000
2pr

6. =12*14
63
168
33
112

7. =3*9
204
27
136
9

8. SQRT 4
6
It becomes positive
2
15

9. =7*20
Won't = 1 - Will
140
84
100 -000

10. =3*4
12
1 -296
80
192

11. =8*10
80
49
40
78

12. =8*11
57
342
Even
88

13. 4/0 =
323
Undefined
144
11

14. SQRT 121
324
153
6
11

15. =7^2
49
A+B (Add both probabilities)
27
A*B (Multiply both probabilities)

16. 27^(1/3)
243
45
3
9

17. Odds that something doesn't happen?

18. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
112
64
160

19. =4*13
6
289
100
52

20. =8^1
8
60
60
102

21. Dividing Fractions
56
625
2 -401
Invert (reciprocal) the second fraction and multiply

22. =8^2
Rate * Time = Distance (Hint: Draw a chart)
400
NO
64

23. When is a number divisible by 6?
27
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)
75
361

24. =8*12
96
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
64
1 -296

25. =7*10
x:x^(1/3):2x
99
70
57

26. =10^8
40
9
221
100 -000 -000

27. =3*12
27
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
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
36

28. =13*14
Base * Height
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
117
182

29. =4*10
90
96
40
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

30. =15*15
225
1 -024
81
46 -656

31. Permutations: single source - order matters BUT only for a selection
221
8
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
3

32. =3^5
(b*h)/2
243
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
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

33. SQRT 9
306
45
20
3

34. =7*13
112
Even
8
91

35. What is the difference between a permutation or a combination?

36. =9*11
119
35
209
99

37. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
It gets smaller
104
361
85

38. =11*16
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
176
5
66

39. =5*12
Odd
Multiply the numerators and put the product over the product of the denominators
60
1.414213562

40. =15*17
16
255
1 -000 -000 -000
The direction of the inequality symbol changes

41. =7*12
48
59 -049
84
112

42. =4*11
5
44
247
104

43. When is a number divisible by 3?
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
160
30
Multiply the numerators and put the product over the product of the denominators

44. 512^(1/3)
56
8
81
63

45. =12*13
156
1 -024
1 -000 -000 -000
The direction of the inequality symbol changes

46. =8^3
2
25
512
81

47. =4*16
64
90
1 -024
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

48. =6*12
72
35
It gets smaller
48

49. =7*14
98
324
64
64

50. =4^2
48
Pr^2
The direction of the inequality symbol changes
16