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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. 8^(1/3)
64
49
72
2

2. =6*9
54
84
27
171

3. How do you find the slope of a line?
112
180
7 -776
Difference in the y-coordinates over the difference in the x coodinates

4. How do you find the median of a set of numbers?
10 -000
400
7
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

5. =9^5
56
45
59 -049
16

6. Factor x^2-2xy+y^2
Will = 1 - Won't
(x-y)^2
90
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

7. =4*14
80
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
56
72

8. =3*16
16
48
24
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

9. Probability that A and B will both happen?
65
195
A*B (Multiply both probabilities)
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

10. =4*7
96
72
One (1)
28

11. =2^1
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Even
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
2

12. =13*16
60
208
The direction of the inequality symbol changes
3

13. SQRT 10 -000
10 -000
100
176
6 -561

14. 64^(1/3)
49
9
4
44

15. SQRT 49
165
4
0 (any fraction with 0 on top is 0)
7

16. Permutations: single source - order matters BUT only for a selection
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
36
84
Pr^2

17. =5*14
54
144
99
70

18. =7*10
It gets smaller
7 -776
70
256

19. =15*20
50
300
57
64

20. =8*10
125
7 -776
80
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

21. =5^5
3 -125
15
Subtract the smallest number from the greatest number
8

22. =8*17
57
36
136
10 -000 -000 -000

23. =3*4
108
270
80
12

24. =4*6
24
66
270
44

25. =9*17
75
9
153
54

26. =5*7
65
187
35
Undefined

27. =9*11
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
6
99
154

28. =14*15
15
210
105
25

29. =2^6
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
48
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
64

30. Does x^6 - x^2 = x^4?
NO
289
56
(b*h)/2

31. SQRT 6 -561
81
168
143
49

32. odd x odd =
45
Odd
300
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

33. =10^1
10
84
Will = 1 - Won't
10 -000 -000

34. What happens if you multiply or divide both sides of an inequality by a negative number?
84
10 -000
The direction of the inequality symbol changes
5^(1/3)

35. When is a number divisible by 6?
75
36
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)
42

36. =9^3
3
306
78
729

37. =9*19
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
2
171
252

38. =4*5
512
20
36
(b*h)/2

39. =12*14
168
260
48
36

40. =7*14
98
36
7 -776
Even

41. multiplying decimals
16
285
Ignor decimal points and multiply the two numbers - then count the digits to the right of the decimal points in the original numbers and place the decimal so there are the same number of digits to the right of the decimal
10

42. =4^3
It becomes positive
64
104
140

43. =6*20
120
NO
5
0 (any fraction with 0 on top is 0)

44. =5^3
Difference in the y-coordinates over the difference in the x coodinates
125
210
Combinations don't care about the order of the problems

45. =3*9
162
27
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
512

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

47. =4*18
75
209
72
5

48. =8*15
Add or subtract the numbers on top and keep the same denominator
120
272
59 -049

49. even x odd =
Itself
Even
9
225

50. =2^4
16
81
512
72