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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. SQRT 100
10
260
44
Multiply the numerators and put the product over the product of the denominators

2. =5*20
100
48
4
25

3. =3*11
25
512
16
33

4. =4*5
20
512
0 (any fraction with 0 on top is 0)
204

5. =6^3
64
36
216
1 -296

6. =12*13
196
156
90
(x-y)^2

7. =4^3
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
64
1 -024
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)

8. =3*20
323
6 -561
60
0 (any fraction with 0 on top is 0)

9. =15*20
95
81
8
300

10. Exponents - Raising a power to a power
7 -776
64
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
16

11. =19*20
380
288
187
80

12. =6*20
220
120
70
10 -000 -000 -000

13. 64^(1/3)
63
4
1.732050808
42

14. SQRT 225
25
3
380
15

15. =3^4
81
11
400
70

16. =3*15
24
126
Add or subtract the numbers on top and keep the same denominator
45

17. =7*9
63
361
100
2

18. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
2
Multiply the # of choices for each of the spots
196
Amount of increase/original amount = x/100 (Then cross multiply to find x)

19. =11*18
198
196
208
360

20. =4*7
28
64
512
105

21. Area of a parallelogram?
Base * Height
72
9
Side - Side - Side^2

22. Exponents - Dividing numbers with same base
9
625
117
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

23. =14*17
102
238
1 -024
0 (any fraction with 0 on top is 0)

24. =2^3
8
16
1
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

25. even x even =
10 -000 -000 -000
729
Even
120

26. =18*20
144
221
360
323

27. =7*15
729
105
2
64

28. =9*19
A*B (Multiply both probabilities)
39
270
171

29. =2^2
4
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
400
1 -024

30. =3*16
48
56
77
27

31. =12*14
361
288
168
Base * Height

32. =4*8
32
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
49
187

33. =15*19
256
285
28
Difference in the y-coordinates over the difference in the x coodinates

34. =7^1
64
121
125
7

35. SQRT 10 -000
15
Multiply the # of choices for each of the spots
221
100

36. 4/0 =
7
Undefined
3 -125
225

37. SQRT 81
(x-y)^2
80
9
8

38. Distance Formula?
Rate * Time = Distance (Hint: Draw a chart)
216
2
Undefined

39. =2^4
1.414213562
1
16
59 -049

40. =12*16
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)
25
625
192

41. =3^2
243
9
6
121

42. =2^1
216
One (1)
Combinations don't care about the order of the problems
2

43. =7*12
78
84
98
100

44. =4^1
1 -000
8
32
4

45. =2^7
260
36
198
128

46. =9*20
180
196
59 -049
57

47. =3*6
Subtract the smallest number from the greatest number
216
18
208

48. =6*9
96
68
168
54

49. =6*10
77
Invert (reciprocal) the second fraction and multiply
220
60

50. =7*7
Undefined
It gets smaller
49
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)