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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. 4/0 =
24
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
64
Undefined

2. SQRT 100 -000 -000
10 -000
52
64
NO

3. =12*13
24
156
3:4:5 -- 5:12:13 -- 7:24:25
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

4. SQRT 4
5^(1/3)
2
78
72

5. =13*16
49
64
208
285

6. =3*14
216
Multiply both fractions to get a common denominator add or subtract as usual
42
1

7. =13*19
27
280
4
247

8. =5*13
65
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
1 -000 -000
9

9. =7*12
60
84
260
3:4:5 -- 5:12:13 -- 7:24:25

10. =4^2
16
Base * Height
72
108

11. =4*20
238
128
A*B (Multiply both probabilities)
80

12. =5^4
5^(1/3)
156
36
625

13. Basic probability formula?
1 -000 -000
10 -000 -000
49
Number of outcomes you want/total number of possible outcomes

14. Exponents - Dividing numbers with same base
3
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
80
121

15. =15*19
48
46 -656
400
285

16. Odds that at least one thing will happen?

17. =2^9
256
NO
512
100 -000

18. =9*13
99
512
4
117

19. even x even =
Even
125
64
Won't = 1 - Will

20. When is a number divisible by 6?
2pr
63
Add or subtract the numbers on top and keep the same denominator
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)

21. =9^3
729
5
243
64

22. SQRT 169
100 -000 -000
13
90
5

23. =4^6
4 -096
40
(x-y)^2
52

24. =6*17
8
256
57
102

25. =9*10
144
90
8
154

26. Probability that A or B will happen?
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
A+B (Add both probabilities)
64

27. =20^2
187
169
400
343

28. =3*4
(b*h)/2
57
12
40

29. =4*19
56
25
78
76

30. =18*20
55
288
360
36

31. =7*15
247
105
44
289

32. =3*9
1 -296
27
272
180

33. =4*4
16
306
45
Amount of increase/original amount = x/100 (Then cross multiply to find x)

34. =13*17
Undefined
Multiply the # of choices for each of the spots
221
Even

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

36. =8*18
A*B (Multiply both probabilities)
7 -776
144
Even

37. =8^1
8
9
144
45

38. If you raise a negative number to an odd power - what happens to the number?
It gets smaller
25
729
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

39. =5^3
108
225
125
1 -296

40. =4^4
256
304
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
36

41. =9*12
270
Subtract the smallest number from the greatest number
27
108

42. Area of a triangle?
Itself
729
(b*h)/2
NO

43. =8^3
7
154
512
72

44. =9*18
8
162
(x-y)^2
Odd

45. =6*13
243
78
18
240

46. Dividing Decimals
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
360
2

47. =8*14
5
112
64
27

48. Permutations: single source - order matters
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
224
39
300

49. =4*10
40
6
54
Amount of increase/original amount = x/100 (Then cross multiply to find x)

50. =15*18
Base * Height
270
0 (any fraction with 0 on top is 0)
225