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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. =4^3
180
6
32
64

2. =8*13
380
0 (any fraction with 0 on top is 0)
195
104

3. =10^1
Will = 1 - Won't
64
729
10

4. =10^5
100 -000
Add or subtract the numbers on top and keep the same denominator
24
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

5. =8^3
81
100 -000
10 -000
512

6. SQRT 121
25
256
42
11

7. =2^3
8
4
100 -000
729

8. odd x odd =
360
Odd
280
81

9. When is a number divisible by 6?
343
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)
NO
225

10. =2^6
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
64
288
36

11. =13*16
208
4
Undefined
380

12. =9^2
27
36
1 -296
81

13. =4*18
323
72
112
102

14. =6^5
9
270
91
7 -776

15. Distance Formula?
Rate * Time = Distance (Hint: Draw a chart)
42
1.414213562
Base * Height

16. =11*14
512
154
512
81

17. =9*13
143
117
36
25

18. =3*14
It gets smaller
One (1)
42
72

19. =8*11
180
196
126
88

20. =14*18
133
238
1 -000 -000 -000
252

21. =9*16
216
Amount of increase/original amount = x/100 (Then cross multiply to find x)
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
144

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

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23. 729^(1/3)
343
625
9
5^(1/3)

24. =7^3
12
343
16
4

25. =6*16
343
105
96
306

26. SQRT 3
208
1.732050808
Itself
160

27. Pythagorean Triples (lengths)?
343
Undefined
3:4:5 -- 5:12:13 -- 7:24:25
8

28. If you raise a negative number to an odd power - what happens to the number?
3
It gets smaller
Multiply the # of choices for each of the spots
Multiply both fractions to get a common denominator add or subtract as usual

29. Any number to the first power is?
Itself
Pr^2
33
60

30. =9*17
153
63
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)
126

31. =9*15
135
NO
The direction of the inequality symbol changes
8

32. =9*9
1.732050808
2pr
81
192

33. =16*17
NO
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
272
2

34. SQRT 100 -000 -000
114
10 -000
96
10

35. Key to percent increase/decrease
Amount of increase/original amount = x/100 (Then cross multiply to find x)
5
100
12

36. =12*19
100 -000 -000
42
2
228

37. =17*19
10
88
323
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

38. =8^2
64
88
7
2pr

39. =10^6
1 -000 -000
112
289
625

40. =4*10
40
Amount of increase/original amount = x/100 (Then cross multiply to find x)
171
48

41. =3*16
154
48
104
304

42. =4*11
4
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
234
44

43. =14*17
238
Odd
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
Multiply the numerators and put the product over the product of the denominators

44. how do you find the range of a set of numbers?
1 -024
Subtract the smallest number from the greatest number
195
8

45. =15*19
216
285
Will = 1 - Won't
6

46. SQRT 2
114
126
1.414213562
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

47. =7*16
243
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
112
24

48. Probability that A and B will both happen?
Invert (reciprocal) the second fraction and multiply
A*B (Multiply both probabilities)
90
Pick the # that occurs most frequently

49. Adding or subtracting fractions with different denominators
Multiply both fractions to get a common denominator add or subtract as usual
18
3:4:5 -- 5:12:13 -- 7:24:25
0 (any fraction with 0 on top is 0)

50. =10^8
3
Difference in the y-coordinates over the difference in the x coodinates
100 -000 -000
60