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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. =12*16
192
36
60
180

2. SQRT 121
3 -125
75
11
78

3. =3^3
27
210
104
68

4. =6*19
114
3 -125
64
272

5. =7^2
49
195
Multiply the numerators and put the product over the product of the denominators
128

6. =10^6
306
24
1 -000 -000
4 -096

7. even x odd =
112
Won't = 1 - Will
Even
100 -000 -000

8. How do you find the median of a set of numbers?
9
72
64
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

9. how do you find the range of a set of numbers?
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
100 -000 -000
Subtract the smallest number from the greatest number
10

10. How do you find the mode of a set of numbers?
2
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
Odd
Pick the # that occurs most frequently

11. Dividing Decimals
162
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
247
198

12. =13*16
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
12
125
208

13. Another way to write cube root 5
20
5^(1/3)
64
27

14. =10^9
1 -000 -000 -000
32
340
121

15. =4*9
5^(1/3)
36
340
7 -776

16. SQRT 225
2pr
15
64
180

17. =12*13
144
121
Undefined
156

18. SQRT 4 -096
112
16
66
64

19. =3*10
7
187
30
126

20. 343^(1/3)
252
102
7
256

21. SQRT 25
5
52
90
72

22. =6^5
Even
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
7 -776
18

23. Does x^6 - x^2 = x^4?
180
NO
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
64

24. When is a number divisible by 4?

25. =2^10
28
1 -024
280
192

26. =7*16
234
289
112
Odd

27. =19*20
81
380
136
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

28. =4^1
100 -000 -000
4
78
133

29. =5*11
112
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
154
55

30. =7^4
2 -401
192
59 -049
120

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

32. What happens if you multiply or divide both sides of an inequality by a negative number?
180
210
28
The direction of the inequality symbol changes

33. 729^(1/3)
36
4 -096
9
3 -125

34. =3*11
33
7
49
12

35. =6*15
144
126
90
1 -000 -000

36. =10^7
729
45
10 -000 -000
80

37. =9*14
48
256
126
9

38. =5*7
95
Even
65
35

39. Adding or subtracting fractions with the same denominator
42
306
Add or subtract the numbers on top and keep the same denominator
35

40. =3*5
Odd
165
15
256

41. When is a number divisible by 6?
100 -000
85
119
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. =16*18
1.732050808
288
1 -000 -000
198

43. 30:60:90 Right Triangle (Lenghts)
8
39
57
x:x^(1/3):2x

44. Circumference of a circle?
Undefined
6
2pr
4

45. =4^6
4 -096
45
4
192

46. Probability that A or B will happen?
0 (any fraction with 0 on top is 0)
15
A+B (Add both probabilities)
Will = 1 - Won't

47. =7*13
25
Will = 1 - Won't
Odd
91

48. Area of a parallelogram?
36
Base * Height
20
225

49. =4*19
143
Permutations ask for 'arraingements' Combinations ask for 'Groups'
76
256

50. =4*14
56
77
81
The direction of the inequality symbol changes