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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. =10^4
625
10 -000
1 -296
NO

2. SQRT 225
289
15
Multiply the # of choices for each of the spots
Will = 1 - Won't

3. =7*8
Multiply the # of choices for each of the spots
45
Subtract the smallest number from the greatest number
56

4. SQRT 64
8
126
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
81

5. =13*18
27
234
400
81

6. =5^1
16
5
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)
32

7. =5*5
9
25
44
4

8. =6*16
It gets smaller
96
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)
80

9. SQRT 1 -024
A+B (Add both probabilities)
It becomes positive
32
100 -000

10. =14*20
57
104
6
280

11. SQRT 100 -000 -000
NO
36
7
10 -000

12. =2^7
A+B (Add both probabilities)
128
195
133

13. =12*17
204
1 -296
153
270

14. 512^(1/3)
16
182
8
84

15. =16*17
8
272
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
1 -000

16. =18*18
156
187
64
324

17. =9*17
NO
153
380
80

18. =9^5
8
59 -049
90
5^(1/3)

19. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
88
144
It gets smaller
32

20. =8^3
8
NO
512
320

21. =15^2
49
112
300
225

22. =5^5
10 -000 -000
625
3 -125
342

23. =8*16
2
90
Even
128

24. =14*17
49
24
238
4

25. =10^3
24
81
60
1 -000

26. =8*8
380
216
64
57

27. When is a number divisible by 3?
625
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
136
238

28. =4*12
121
48
36
2

29. =5^3
154
125
320
25

30. =4*19
240
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
76
133

31. Key to percent increase/decrease
A*B (Multiply both probabilities)
323
Amount of increase/original amount = x/100 (Then cross multiply to find x)
16

32. =5*11
16
144
55
6

33. =16*16
256
120
128
8

34. =15*16
240
49
81
280

35. how do you find the range of a set of numbers?
84
64
Subtract the smallest number from the greatest number
Base * Height

36. =7*10
64
Even
NO
70

37. =10^2
Pick the # that occurs most frequently
100
27
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

38. =4*6
361
70
195
24

39. =6*18
76
182
108
2

40. =6^6
0 (any fraction with 0 on top is 0)
234
300
46 -656

41. =4*10
729
133
8
40

42. =8*13
16
Permutations ask for 'arraingements' Combinations ask for 'Groups'
24
104

43. =14*16
238
9
224
8

44. Does x^6 - x^2 = x^4?
361
NO
1
1 -000

45. =13*17
221
Even
7 -776
125

46. =4^5
216
5
1 -024
72

47. =9^4
1.414213562
6 -561
10 -000
60

48. =10^8
125
192
32
100 -000 -000

49. =3^3
27
306
7 -776
42

50. How do you find the median of a set of numbers?
3
117
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
3 -125