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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. =7^4
55
2 -401
59 -049
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

2. =2^6
64
35
84
76

3. =14*14
195
Even
196
50

4. Probability that A or B will happen?
729
256
72
A+B (Add both probabilities)

5. =1^3
10 -000
1
NO
1 -296

6. =8*15
Number of outcomes you want/total number of possible outcomes
Will = 1 - Won't
120
Add or subtract the numbers on top and keep the same denominator

7. =5^4
625
27
117
20

8. 125^(1/3)
27
5
13
380

9. Equation for a line?
96
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
20
3

10. =4*12
625
60
48
91

11. =10^6
729
1 -000 -000
143
625

12. =13*20
100 -000 -000
81
243
260

13. =8*8
64
625
1 -000 -000 -000
Invert (reciprocal) the second fraction and multiply

14. =12*17
204
4
64
72

15. =7^1
133
7
63
2

16. =4*6
3
1 -000
24
66

17. =13*16
3:4:5 -- 5:12:13 -- 7:24:25
144
208
Rate * Time = Distance (Hint: Draw a chart)

18. If you raise a negative number to an even power - what happens to the number?
It gets smaller
It becomes positive
Amount of increase/original amount = x/100 (Then cross multiply to find x)
132

19. =5^1
5
81
5^(1/3)
0 (any fraction with 0 on top is 0)

20. =14*20
Multiply the numerators and put the product over the product of the denominators
280
729
66

21. SQRT 10 -000 -000 -000
Odd
169
100 -000
3

22. SQRT 16
Even
6
4
27

23. =8*12
198
36
25
96

24. =17*17
16
2
289
112

25. =7*13
46 -656
70
2
91

26. =8*11
195
20
36
88

27. =8^1
121
64
285
8

28. =8*13
187
182
51
104

29. =4*16
36
27
Pr^2
64

30. =2^2
4
Number of outcomes you want/total number of possible outcomes
95
16

31. =6^3
45
216
The direction of the inequality symbol changes
51

32. =6^5
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
7 -776
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
91

33. =3*12
36
Itself
25
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

34. SQRT 225
165
54
90
15

35. =17*18
306
16
64
10 -000 -000

36. =11*14
117
90
154
15

37. =9*18
162
128
5
272

38. =4*18
Multiply the # of choices for each of the spots
25
It becomes positive
72

39. =16*18
64
Even
x:x^(1/3):2x
288

40. =4*19
30
12
162
76

41. =7*19
64
133
240
84

42. =3*14
33
48
64
42

43. Odds that something doesn't happen?

44. Exponents - Multiplying numbers with same base
128
49
342
Add their exponents (6^2 *6^3 = 6^5)

45. =11^2
121
81
729
342

46. When is a number divisible by 4?

47. =9*14
126
52
220
4

48. 4/0 =
64
36
Undefined
It gets smaller

49. Multiplying Fractions
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)
Base * Height
Multiply the numerators and put the product over the product of the denominators
28

50. =25^2
625
60
8
13