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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*17
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
187
90
136

2. Pythagorean Triples (lengths)?
1 -000
90
3:4:5 -- 5:12:13 -- 7:24:25
NO

3. =6*12
27
324
72
255

4. =4*4
5
Even
16
51

5. =4*20
80
Multiply the numerators and put the product over the product of the denominators
16
260

6. =7*16
112
238
125
221

7. SQRT 64
Even
121
4 -096
8

8. SQRT 81
209
68
9
65

9. =9^3
Undefined
162
105
729

10. =10^10
42
154
88
10 -000 -000 -000

11. 512^(1/3)
10
280
Pick the # that occurs most frequently
8

12. =8*10
5
20
80
36

13. =8*18
216
64
144
66

14. =8*12
143
126
Pr^2
96

15. SQRT 100
324
Line up the decimal points and proceed as usual
10 -000
10

16. =12*19
208
72
228
15

17. =13*13
169
28
27
2pr

18. =15*15
225
140
2 -401
625

19. =3^3
30
27
204
1 -024

20. SQRT 1 -296
36
75
8
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

21. =4*16
125
10 -000 -000 -000
64
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

22. SQRT 625
It gets smaller
8
128
25

23. How do you tell if it's a permutation or combination?

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24. =6*9
54
2
9
64

25. =11*17
187
It gets smaller
36
44

26. If you raise a negative number to an even power - what happens to the number?
1 -000
7
180
It becomes positive

27. =10^3
209
1 -000
Number of outcomes you want/total number of possible outcomes
13

28. Order of operations
8
225
16
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

29. =18*20
360
99
171
Undefined

30. =7^1
Odd
7
12
300

31. =9^2
272
81
117
270

32. Dividing Fractions
Invert (reciprocal) the second fraction and multiply
221
10 -000 -000
400

33. =6^6
46 -656
270
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
210

34. =3^3
225
63
Pr^2
27

35. =10^5
100 -000
8
6
136

36. Another way to write cube root 5
36
5^(1/3)
9
65

37. =6*18
32
512
240
108

38. 64^(1/3)
6 -561
4
80
729

39. odd x odd =
Odd
196
168
360

40. =11*12
x:x^(1/3):2x
220
1 -024
132

41. =2^1
8
121
2
280

42. =5*10
Even
1 -000
50
9

43. even x odd =
72
36
Even
5

44. 8^(1/3)
2
729
11
20

45. SQRT 100 -000 -000
76
Even
52
10 -000

46. =4^3
180
176
60
64

47. =9^1
9
Base * Height
512
95

48. =16*18
380
288
Amount of increase/original amount = x/100 (Then cross multiply to find x)
Add their exponents (6^2 *6^3 = 6^5)

49. even x 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
221
225
Even

50. =12*14
168
153
7
100 -000